Finding the Fourth Proportional to 8,788.41, 12,128.31 and 5,012.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.41 : 12,128.31 = 5,012.15 : x
2. Step 2: Convert to fraction form
   8,788.41/12,128.31 = 5,012.15/x
3. Step 3: Cross multiply
   8,788.41x = 12,128.31 × 5,012.15
4. Step 4: Simplify right side
   8,788.41x = 60,788,848.32
5. Step 5: Solve for x
   x = 60,788,848.32/8,788.41
6. Step 6: Final answer
   x = 6,916.93