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Finding the Fourth Proportional to 13,792.44, 20,655.76 and 7,936.76

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Solution

The fourth proportional to 13,792.44, 20,655.76 and 7,936.76 is: 11,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.44 : 20,655.76 = 7,936.76 : x
  2. Step 2: Convert to fraction form
    13,792.44/20,655.76 = 7,936.76/x
  3. Step 3: Cross multiply
    13,792.44x = 20,655.76 × 7,936.76
  4. Step 4: Simplify right side
    13,792.44x = 163,939,809.74
  5. Step 5: Solve for x
    x = 163,939,809.74/13,792.44
  6. Step 6: Final answer
    x = 11,886.21

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