Finding the Fourth Proportional to 12,856.74, 17,739.06 and 7,550.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856.74 : 17,739.06 = 7,550.52 : x
2. Step 2: Convert to fraction form
   12,856.74/17,739.06 = 7,550.52/x
3. Step 3: Cross multiply
   12,856.74x = 17,739.06 × 7,550.52
4. Step 4: Simplify right side
   12,856.74x = 133,939,127.31
5. Step 5: Solve for x
   x = 133,939,127.31/12,856.74
6. Step 6: Final answer
   x = 10,417.81