Finding the Fourth Proportional to 12,748.50, 19,124.91 and 3,981.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.50 : 19,124.91 = 3,981.69 : x
2. Step 2: Convert to fraction form
   12,748.50/19,124.91 = 3,981.69/x
3. Step 3: Cross multiply
   12,748.50x = 19,124.91 × 3,981.69
4. Step 4: Simplify right side
   12,748.50x = 76,149,462.90
5. Step 5: Solve for x
   x = 76,149,462.90/12,748.50
6. Step 6: Final answer
   x = 5,973.21