Finding the Fourth Proportional to 8,788.08, 12,128.67 and 5,012.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.08 : 12,128.67 = 5,012.58 : x
2. Step 2: Convert to fraction form
   8,788.08/12,128.67 = 5,012.58/x
3. Step 3: Cross multiply
   8,788.08x = 12,128.67 × 5,012.58
4. Step 4: Simplify right side
   8,788.08x = 60,795,928.67
5. Step 5: Solve for x
   x = 60,795,928.67/8,788.08
6. Step 6: Final answer
   x = 6,918.00