Finding the Fourth Proportional to 12,749.30, 19,117.37 and 5,723.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,749.30 : 19,117.37 = 5,723.29 : x
2. Step 2: Convert to fraction form
   12,749.30/19,117.37 = 5,723.29/x
3. Step 3: Cross multiply
   12,749.30x = 19,117.37 × 5,723.29
4. Step 4: Simplify right side
   12,749.30x = 109,414,252.55
5. Step 5: Solve for x
   x = 109,414,252.55/12,749.30
6. Step 6: Final answer
   x = 8,581.98