Finding the Fourth Proportional to 9,023.57, 12,452.61 and 4,990.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,023.57 : 12,452.61 = 4,990.34 : x
2. Step 2: Convert to fraction form
   9,023.57/12,452.61 = 4,990.34/x
3. Step 3: Cross multiply
   9,023.57x = 12,452.61 × 4,990.34
4. Step 4: Simplify right side
   9,023.57x = 62,142,732.84
5. Step 5: Solve for x
   x = 62,142,732.84/9,023.57
6. Step 6: Final answer
   x = 6,886.72