Finding the Fourth Proportional to 10,007.29, 13,810.31 and 5,531.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.29 : 13,810.31 = 5,531.11 : x
2. Step 2: Convert to fraction form
   10,007.29/13,810.31 = 5,531.11/x
3. Step 3: Cross multiply
   10,007.29x = 13,810.31 × 5,531.11
4. Step 4: Simplify right side
   10,007.29x = 76,386,333.42
5. Step 5: Solve for x
   x = 76,386,333.42/10,007.29
6. Step 6: Final answer
   x = 7,633.07