Finding the Fourth Proportional to 10,387.86, 14,335.29 and 5,672.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,387.86 : 14,335.29 = 5,672.22 : x
2. Step 2: Convert to fraction form
   10,387.86/14,335.29 = 5,672.22/x
3. Step 3: Cross multiply
   10,387.86x = 14,335.29 × 5,672.22
4. Step 4: Simplify right side
   10,387.86x = 81,312,918.64
5. Step 5: Solve for x
   x = 81,312,918.64/10,387.86
6. Step 6: Final answer
   x = 7,827.69