Finding the Fourth Proportional to 8,800.12, 12,143.80 and 4,821.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,800.12 : 12,143.80 = 4,821.15 : x
2. Step 2: Convert to fraction form
   8,800.12/12,143.80 = 4,821.15/x
3. Step 3: Cross multiply
   8,800.12x = 12,143.80 × 4,821.15
4. Step 4: Simplify right side
   8,800.12x = 58,547,081.37
5. Step 5: Solve for x
   x = 58,547,081.37/8,800.12
6. Step 6: Final answer
   x = 6,652.99