Finding the Fourth Proportional to 9,393.12, 12,961.76 and 5,200.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,393.12 : 12,961.76 = 5,200.96 : x
2. Step 2: Convert to fraction form
   9,393.12/12,961.76 = 5,200.96/x
3. Step 3: Cross multiply
   9,393.12x = 12,961.76 × 5,200.96
4. Step 4: Simplify right side
   9,393.12x = 67,413,595.29
5. Step 5: Solve for x
   x = 67,413,595.29/9,393.12
6. Step 6: Final answer
   x = 7,176.91