Finding the Fourth Proportional to 9,352.32, 12,906.72 and 5,160.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,352.32 : 12,906.72 = 5,160.96 : x
2. Step 2: Convert to fraction form
   9,352.32/12,906.72 = 5,160.96/x
3. Step 3: Cross multiply
   9,352.32x = 12,906.72 × 5,160.96
4. Step 4: Simplify right side
   9,352.32x = 66,611,065.65
5. Step 5: Solve for x
   x = 66,611,065.65/9,352.32
6. Step 6: Final answer
   x = 7,122.41