Finding the Fourth Proportional to 10,007.75, 13,810.34 and 5,531.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.75 : 13,810.34 = 5,531.42 : x
2. Step 2: Convert to fraction form
   10,007.75/13,810.34 = 5,531.42/x
3. Step 3: Cross multiply
   10,007.75x = 13,810.34 × 5,531.42
4. Step 4: Simplify right side
   10,007.75x = 76,390,694.17
5. Step 5: Solve for x
   x = 76,390,694.17/10,007.75
6. Step 6: Final answer
   x = 7,633.16