Finding the Fourth Proportional to 12,752.91, 19,130.18 and 3,392.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,752.91 : 19,130.18 = 3,392.78 : x
2. Step 2: Convert to fraction form
   12,752.91/19,130.18 = 3,392.78/x
3. Step 3: Cross multiply
   12,752.91x = 19,130.18 × 3,392.78
4. Step 4: Simplify right side
   12,752.91x = 64,904,379.49
5. Step 5: Solve for x
   x = 64,904,379.49/12,752.91
6. Step 6: Final answer
   x = 5,089.38