Finding the Fourth Proportional to 8,993.90, 13,490.94 and 3,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,993.90 : 13,490.94 = 3,150.50 : x
2. Step 2: Convert to fraction form
   8,993.90/13,490.94 = 3,150.50/x
3. Step 3: Cross multiply
   8,993.90x = 13,490.94 × 3,150.50
4. Step 4: Simplify right side
   8,993.90x = 42,503,206.47
5. Step 5: Solve for x
   x = 42,503,206.47/8,993.90
6. Step 6: Final answer
   x = 4,725.78