Finding the Fourth Proportional to 9,123.32, 12,591.16 and 5,588.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.32 : 12,591.16 = 5,588.92 : x
2. Step 2: Convert to fraction form
   9,123.32/12,591.16 = 5,588.92/x
3. Step 3: Cross multiply
   9,123.32x = 12,591.16 × 5,588.92
4. Step 4: Simplify right side
   9,123.32x = 70,370,985.95
5. Step 5: Solve for x
   x = 70,370,985.95/9,123.32
6. Step 6: Final answer
   x = 7,713.31