Finding the Fourth Proportional to 12,686.16, 19,027.52 and 5,759.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,686.16 : 19,027.52 = 5,759.04 : x
2. Step 2: Convert to fraction form
   12,686.16/19,027.52 = 5,759.04/x
3. Step 3: Cross multiply
   12,686.16x = 19,027.52 × 5,759.04
4. Step 4: Simplify right side
   12,686.16x = 109,580,248.78
5. Step 5: Solve for x
   x = 109,580,248.78/12,686.16
6. Step 6: Final answer
   x = 8,637.78