Finding the Fourth Proportional to 12,335.57, 18,503.31 and 5,758.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,335.57 : 18,503.31 = 5,758.10 : x
2. Step 2: Convert to fraction form
   12,335.57/18,503.31 = 5,758.10/x
3. Step 3: Cross multiply
   12,335.57x = 18,503.31 × 5,758.10
4. Step 4: Simplify right side
   12,335.57x = 106,543,909.31
5. Step 5: Solve for x
   x = 106,543,909.31/12,335.57
6. Step 6: Final answer
   x = 8,637.13