Finding the Fourth Proportional to 8,796.62, 12,139.53 and 4,817.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.62 : 12,139.53 = 4,817.90 : x
2. Step 2: Convert to fraction form
   8,796.62/12,139.53 = 4,817.90/x
3. Step 3: Cross multiply
   8,796.62x = 12,139.53 × 4,817.90
4. Step 4: Simplify right side
   8,796.62x = 58,487,041.59
5. Step 5: Solve for x
   x = 58,487,041.59/8,796.62
6. Step 6: Final answer
   x = 6,648.81