Finding the Fourth Proportional to 8,788.99, 12,128.25 and 4,810.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,788.99 : 12,128.25 = 4,810.15 : x
2. Step 2: Convert to fraction form
   8,788.99/12,128.25 = 4,810.15/x
3. Step 3: Cross multiply
   8,788.99x = 12,128.25 × 4,810.15
4. Step 4: Simplify right side
   8,788.99x = 58,338,701.74
5. Step 5: Solve for x
   x = 58,338,701.74/8,788.99
6. Step 6: Final answer
   x = 6,637.70