Finding the Fourth Proportional to 10,387.36, 14,335.14 and 5,672.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.36 : 14,335.14 = 5,672.08 : x
2. Step 2: Convert to fraction form
   10,387.36/14,335.14 = 5,672.08/x
3. Step 3: Cross multiply
   10,387.36x = 14,335.14 × 5,672.08
4. Step 4: Simplify right side
   10,387.36x = 81,310,060.89
5. Step 5: Solve for x
   x = 81,310,060.89/10,387.36
6. Step 6: Final answer
   x = 7,827.79