Finding the Fourth Proportional to 10,117.77, 15,181.03 and 5,432.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,117.77 : 15,181.03 = 5,432.31 : x
2. Step 2: Convert to fraction form
   10,117.77/15,181.03 = 5,432.31/x
3. Step 3: Cross multiply
   10,117.77x = 15,181.03 × 5,432.31
4. Step 4: Simplify right side
   10,117.77x = 82,468,061.08
5. Step 5: Solve for x
   x = 82,468,061.08/10,117.77
6. Step 6: Final answer
   x = 8,150.81