Finding the Fourth Proportional to 8,796.78, 12,139.34 and 4,818.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.78 : 12,139.34 = 4,818.06 : x
2. Step 2: Convert to fraction form
   8,796.78/12,139.34 = 4,818.06/x
3. Step 3: Cross multiply
   8,796.78x = 12,139.34 × 4,818.06
4. Step 4: Simplify right side
   8,796.78x = 58,488,068.48
5. Step 5: Solve for x
   x = 58,488,068.48/8,796.78
6. Step 6: Final answer
   x = 6,648.80