Finding the Fourth Proportional to 10,385.72, 15,570.08 and 7,105.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.72 : 15,570.08 = 7,105.24 : x
2. Step 2: Convert to fraction form
   10,385.72/15,570.08 = 7,105.24/x
3. Step 3: Cross multiply
   10,385.72x = 15,570.08 × 7,105.24
4. Step 4: Simplify right side
   10,385.72x = 110,629,155.22
5. Step 5: Solve for x
   x = 110,629,155.22/10,385.72
6. Step 6: Final answer
   x = 10,652.04