Finding the Fourth Proportional to 9,355.16, 12,909.40 and 5,375.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.16 : 12,909.40 = 5,375.52 : x
2. Step 2: Convert to fraction form
   9,355.16/12,909.40 = 5,375.52/x
3. Step 3: Cross multiply
   9,355.16x = 12,909.40 × 5,375.52
4. Step 4: Simplify right side
   9,355.16x = 69,394,737.89
5. Step 5: Solve for x
   x = 69,394,737.89/9,355.16
6. Step 6: Final answer
   x = 7,417.80