Finding the Fourth Proportional to 9,606.86, 13,258.32 and 5,415.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,606.86 : 13,258.32 = 5,415.92 : x
2. Step 2: Convert to fraction form
   9,606.86/13,258.32 = 5,415.92/x
3. Step 3: Cross multiply
   9,606.86x = 13,258.32 × 5,415.92
4. Step 4: Simplify right side
   9,606.86x = 71,806,000.45
5. Step 5: Solve for x
   x = 71,806,000.45/9,606.86
6. Step 6: Final answer
   x = 7,474.45