Finding the Fourth Proportional to 8,799.05, 12,142.76 and 4,820.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,799.05 : 12,142.76 = 4,820.53 : x
2. Step 2: Convert to fraction form
   8,799.05/12,142.76 = 4,820.53/x
3. Step 3: Cross multiply
   8,799.05x = 12,142.76 × 4,820.53
4. Step 4: Simplify right side
   8,799.05x = 58,534,484.40
5. Step 5: Solve for x
   x = 58,534,484.40/8,799.05
6. Step 6: Final answer
   x = 6,652.37