Finding the Fourth Proportional to 15,697.16, 23,525.72 and 7,358.78

Step by Step Solution

1. Step 1: Write the proportion equation
   15,697.16 : 23,525.72 = 7,358.78 : x
2. Step 2: Convert to fraction form
   15,697.16/23,525.72 = 7,358.78/x
3. Step 3: Cross multiply
   15,697.16x = 23,525.72 × 7,358.78
4. Step 4: Simplify right side
   15,697.16x = 173,120,597.82
5. Step 5: Solve for x
   x = 173,120,597.82/15,697.16
6. Step 6: Final answer
   x = 11,028.78