Finding the Fourth Proportional to 9,054.31, 12,478.03 and 7,061.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,054.31 : 12,478.03 = 7,061.71 : x
2. Step 2: Convert to fraction form
   9,054.31/12,478.03 = 7,061.71/x
3. Step 3: Cross multiply
   9,054.31x = 12,478.03 × 7,061.71
4. Step 4: Simplify right side
   9,054.31x = 88,116,229.23
5. Step 5: Solve for x
   x = 88,116,229.23/9,054.31
6. Step 6: Final answer
   x = 9,731.97