Finding the Fourth Proportional to 10,081.18, 15,117.90 and 3,505.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.18 : 15,117.90 = 3,505.60 : x
2. Step 2: Convert to fraction form
   10,081.18/15,117.90 = 3,505.60/x
3. Step 3: Cross multiply
   10,081.18x = 15,117.90 × 3,505.60
4. Step 4: Simplify right side
   10,081.18x = 52,997,310.24
5. Step 5: Solve for x
   x = 52,997,310.24/10,081.18
6. Step 6: Final answer
   x = 5,257.05