Finding the Fourth Proportional to 9,340.32, 12,888.18 and 5,360.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.32 : 12,888.18 = 5,360.88 : x
2. Step 2: Convert to fraction form
   9,340.32/12,888.18 = 5,360.88/x
3. Step 3: Cross multiply
   9,340.32x = 12,888.18 × 5,360.88
4. Step 4: Simplify right side
   9,340.32x = 69,091,986.40
5. Step 5: Solve for x
   x = 69,091,986.40/9,340.32
6. Step 6: Final answer
   x = 7,397.18