Finding the Fourth Proportional to 8,899.27, 12,280.69 and 5,121.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.27 : 12,280.69 = 5,121.91 : x
2. Step 2: Convert to fraction form
   8,899.27/12,280.69 = 5,121.91/x
3. Step 3: Cross multiply
   8,899.27x = 12,280.69 × 5,121.91
4. Step 4: Simplify right side
   8,899.27x = 62,900,561.73
5. Step 5: Solve for x
   x = 62,900,561.73/8,899.27
6. Step 6: Final answer
   x = 7,068.06