Finding the Fourth Proportional to 8,785.98, 12,123.60 and 5,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,785.98 : 12,123.60 = 5,248.50 : x
2. Step 2: Convert to fraction form
   8,785.98/12,123.60 = 5,248.50/x
3. Step 3: Cross multiply
   8,785.98x = 12,123.60 × 5,248.50
4. Step 4: Simplify right side
   8,785.98x = 63,630,714.60
5. Step 5: Solve for x
   x = 63,630,714.60/8,785.98
6. Step 6: Final answer
   x = 7,242.30