Finding the Fourth Proportional to 10,007.31, 13,810.02 and 5,531.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.31 : 13,810.02 = 5,531.37 : x
2. Step 2: Convert to fraction form
   10,007.31/13,810.02 = 5,531.37/x
3. Step 3: Cross multiply
   10,007.31x = 13,810.02 × 5,531.37
4. Step 4: Simplify right side
   10,007.31x = 76,388,330.33
5. Step 5: Solve for x
   x = 76,388,330.33/10,007.31
6. Step 6: Final answer
   x = 7,633.25