Finding the Fourth Proportional to 10,387.62, 14,335.20 and 5,672.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.62 : 14,335.20 = 5,672.16 : x
2. Step 2: Convert to fraction form
   10,387.62/14,335.20 = 5,672.16/x
3. Step 3: Cross multiply
   10,387.62x = 14,335.20 × 5,672.16
4. Step 4: Simplify right side
   10,387.62x = 81,311,548.03
5. Step 5: Solve for x
   x = 81,311,548.03/10,387.62
6. Step 6: Final answer
   x = 7,827.74