Finding the Fourth Proportional to 8,899.95, 12,282.51 and 5,123.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.95 : 12,282.51 = 5,123.58 : x
2. Step 2: Convert to fraction form
   8,899.95/12,282.51 = 5,123.58/x
3. Step 3: Cross multiply
   8,899.95x = 12,282.51 × 5,123.58
4. Step 4: Simplify right side
   8,899.95x = 62,930,422.59
5. Step 5: Solve for x
   x = 62,930,422.59/8,899.95
6. Step 6: Final answer
   x = 7,070.87