Finding the Fourth Proportional to 4,892.40, 7,339.32 and 3,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,892.40 : 7,339.32 = 3,168.72 : x
2. Step 2: Convert to fraction form
   4,892.40/7,339.32 = 3,168.72/x
3. Step 3: Cross multiply
   4,892.40x = 7,339.32 × 3,168.72
4. Step 4: Simplify right side
   4,892.40x = 23,256,250.07
5. Step 5: Solve for x
   x = 23,256,250.07/4,892.40
6. Step 6: Final answer
   x = 4,753.55