Finding the Fourth Proportional to 9,156.32, 12,597.36 and 7,056.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,156.32 : 12,597.36 = 7,056.80 : x
2. Step 2: Convert to fraction form
   9,156.32/12,597.36 = 7,056.80/x
3. Step 3: Cross multiply
   9,156.32x = 12,597.36 × 7,056.80
4. Step 4: Simplify right side
   9,156.32x = 88,897,050.05
5. Step 5: Solve for x
   x = 88,897,050.05/9,156.32
6. Step 6: Final answer
   x = 9,708.82