Finding the Fourth Proportional to 9,607.05, 13,257.50 and 5,415.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,607.05 : 13,257.50 = 5,415.30 : x
2. Step 2: Convert to fraction form
   9,607.05/13,257.50 = 5,415.30/x
3. Step 3: Cross multiply
   9,607.05x = 13,257.50 × 5,415.30
4. Step 4: Simplify right side
   9,607.05x = 71,793,312.67
5. Step 5: Solve for x
   x = 71,793,312.67/9,607.05
6. Step 6: Final answer
   x = 7,472.98