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Finding the Fourth Proportional to 12,415.55, 18,623.66 and 3,650.74

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Solution

The fourth proportional to 12,415.55, 18,623.66 and 3,650.74 is: 5,476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.55 : 18,623.66 = 3,650.74 : x
  2. Step 2: Convert to fraction form
    12,415.55/18,623.66 = 3,650.74/x
  3. Step 3: Cross multiply
    12,415.55x = 18,623.66 × 3,650.74
  4. Step 4: Simplify right side
    12,415.55x = 67,990,075.70
  5. Step 5: Solve for x
    x = 67,990,075.70/12,415.55
  6. Step 6: Final answer
    x = 5,476.21

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