Finding the Fourth Proportional to 10,070.16, 15,047.52 and 7,685.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,070.16 : 15,047.52 = 7,685.04 : x
2. Step 2: Convert to fraction form
   10,070.16/15,047.52 = 7,685.04/x
3. Step 3: Cross multiply
   10,070.16x = 15,047.52 × 7,685.04
4. Step 4: Simplify right side
   10,070.16x = 115,640,793.10
5. Step 5: Solve for x
   x = 115,640,793.10/10,070.16
6. Step 6: Final answer
   x = 11,483.51