Finding the Fourth Proportional to 9,607.48, 13,257.86 and 5,415.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,607.48 : 13,257.86 = 5,415.72 : x
2. Step 2: Convert to fraction form
   9,607.48/13,257.86 = 5,415.72/x
3. Step 3: Cross multiply
   9,607.48x = 13,257.86 × 5,415.72
4. Step 4: Simplify right side
   9,607.48x = 71,800,857.56
5. Step 5: Solve for x
   x = 71,800,857.56/9,607.48
6. Step 6: Final answer
   x = 7,473.43