Finding the Fourth Proportional to 12,663, 19,002.06 and 5,737.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,663 : 19,002.06 = 5,737.50 : x
2. Step 2: Convert to fraction form
   12,663/19,002.06 = 5,737.50/x
3. Step 3: Cross multiply
   12,663x = 19,002.06 × 5,737.50
4. Step 4: Simplify right side
   12,663x = 109,024,319.25
5. Step 5: Solve for x
   x = 109,024,319.25/12,663
6. Step 6: Final answer
   x = 8,609.68