Finding the Fourth Proportional to 8,799.90, 12,143.72 and 4,820.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.90 : 12,143.72 = 4,820.98 : x
2. Step 2: Convert to fraction form
   8,799.90/12,143.72 = 4,820.98/x
3. Step 3: Cross multiply
   8,799.90x = 12,143.72 × 4,820.98
4. Step 4: Simplify right side
   8,799.90x = 58,544,631.25
5. Step 5: Solve for x
   x = 58,544,631.25/8,799.90
6. Step 6: Final answer
   x = 6,652.87