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Finding the Fourth Proportional to 13,047.55, 18,005.29 and 7,742.25

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Solution

The fourth proportional to 13,047.55, 18,005.29 and 7,742.25 is: 10,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.55 : 18,005.29 = 7,742.25 : x
  2. Step 2: Convert to fraction form
    13,047.55/18,005.29 = 7,742.25/x
  3. Step 3: Cross multiply
    13,047.55x = 18,005.29 × 7,742.25
  4. Step 4: Simplify right side
    13,047.55x = 139,401,437.15
  5. Step 5: Solve for x
    x = 139,401,437.15/13,047.55
  6. Step 6: Final answer
    x = 10,684.11

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