Finding the Fourth Proportional to 10,387.98, 14,335.49 and 5,672.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.98 : 14,335.49 = 5,672.37 : x
2. Step 2: Convert to fraction form
   10,387.98/14,335.49 = 5,672.37/x
3. Step 3: Cross multiply
   10,387.98x = 14,335.49 × 5,672.37
4. Step 4: Simplify right side
   10,387.98x = 81,316,175.05
5. Step 5: Solve for x
   x = 81,316,175.05/10,387.98
6. Step 6: Final answer
   x = 7,827.91