Finding the Fourth Proportional to 8,747.58, 13,123.34 and 3,200.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.58 : 13,123.34 = 3,200.90 : x
2. Step 2: Convert to fraction form
   8,747.58/13,123.34 = 3,200.90/x
3. Step 3: Cross multiply
   8,747.58x = 13,123.34 × 3,200.90
4. Step 4: Simplify right side
   8,747.58x = 42,006,499.01
5. Step 5: Solve for x
   x = 42,006,499.01/8,747.58
6. Step 6: Final answer
   x = 4,802.07