Finding the Fourth Proportional to 9,103.89, 12,564.57 and 5,125.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,103.89 : 12,564.57 = 5,125.78 : x
2. Step 2: Convert to fraction form
   9,103.89/12,564.57 = 5,125.78/x
3. Step 3: Cross multiply
   9,103.89x = 12,564.57 × 5,125.78
4. Step 4: Simplify right side
   9,103.89x = 64,403,221.61
5. Step 5: Solve for x
   x = 64,403,221.61/9,103.89
6. Step 6: Final answer
   x = 7,074.25