Finding the Fourth Proportional to 10,085.28, 13,916.88 and 5,609.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.28 : 13,916.88 = 5,609.04 : x
2. Step 2: Convert to fraction form
   10,085.28/13,916.88 = 5,609.04/x
3. Step 3: Cross multiply
   10,085.28x = 13,916.88 × 5,609.04
4. Step 4: Simplify right side
   10,085.28x = 78,060,336.60
5. Step 5: Solve for x
   x = 78,060,336.60/10,085.28
6. Step 6: Final answer
   x = 7,740.03