Finding the Fourth Proportional to 8,890.47, 12,271.22 and 5,114.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.47 : 12,271.22 = 5,114.05 : x
2. Step 2: Convert to fraction form
   8,890.47/12,271.22 = 5,114.05/x
3. Step 3: Cross multiply
   8,890.47x = 12,271.22 × 5,114.05
4. Step 4: Simplify right side
   8,890.47x = 62,755,614.75
5. Step 5: Solve for x
   x = 62,755,614.75/8,890.47
6. Step 6: Final answer
   x = 7,058.75