Finding the Fourth Proportional to 4,931.06, 7,426.13 and 4,155.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,931.06 : 7,426.13 = 4,155.89 : x
2. Step 2: Convert to fraction form
   4,931.06/7,426.13 = 4,155.89/x
3. Step 3: Cross multiply
   4,931.06x = 7,426.13 × 4,155.89
4. Step 4: Simplify right side
   4,931.06x = 30,862,121.50
5. Step 5: Solve for x
   x = 30,862,121.50/4,931.06
6. Step 6: Final answer
   x = 6,258.73