Finding the Fourth Proportional to 12,782.46, 19,132.38 and 7,861.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782.46 : 19,132.38 = 7,861.98 : x
2. Step 2: Convert to fraction form
   12,782.46/19,132.38 = 7,861.98/x
3. Step 3: Cross multiply
   12,782.46x = 19,132.38 × 7,861.98
4. Step 4: Simplify right side
   12,782.46x = 150,418,388.91
5. Step 5: Solve for x
   x = 150,418,388.91/12,782.46
6. Step 6: Final answer
   x = 11,767.56