Finding the Fourth Proportional to 8,899.45, 12,281.82 and 5,123.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.45 : 12,281.82 = 5,123.08 : x
2. Step 2: Convert to fraction form
   8,899.45/12,281.82 = 5,123.08/x
3. Step 3: Cross multiply
   8,899.45x = 12,281.82 × 5,123.08
4. Step 4: Simplify right side
   8,899.45x = 62,920,746.41
5. Step 5: Solve for x
   x = 62,920,746.41/8,899.45
6. Step 6: Final answer
   x = 7,070.18