Finding the Fourth Proportional to 8,799.71, 12,143.30 and 4,820.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.71 : 12,143.30 = 4,820.79 : x
2. Step 2: Convert to fraction form
   8,799.71/12,143.30 = 4,820.79/x
3. Step 3: Cross multiply
   8,799.71x = 12,143.30 × 4,820.79
4. Step 4: Simplify right side
   8,799.71x = 58,540,275.10
5. Step 5: Solve for x
   x = 58,540,275.10/8,799.71
6. Step 6: Final answer
   x = 6,652.52