Finding the Fourth Proportional to 9,247.06, 12,760.89 and 5,055.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,247.06 : 12,760.89 = 5,055.31 : x
2. Step 2: Convert to fraction form
   9,247.06/12,760.89 = 5,055.31/x
3. Step 3: Cross multiply
   9,247.06x = 12,760.89 × 5,055.31
4. Step 4: Simplify right side
   9,247.06x = 64,510,254.83
5. Step 5: Solve for x
   x = 64,510,254.83/9,247.06
6. Step 6: Final answer
   x = 6,976.30