Finding the Fourth Proportional to 12,566.48, 17,345.79 and 9,039.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,566.48 : 17,345.79 = 9,039.93 : x
2. Step 2: Convert to fraction form
   12,566.48/17,345.79 = 9,039.93/x
3. Step 3: Cross multiply
   12,566.48x = 17,345.79 × 9,039.93
4. Step 4: Simplify right side
   12,566.48x = 156,804,727.39
5. Step 5: Solve for x
   x = 156,804,727.39/12,566.48
6. Step 6: Final answer
   x = 12,478.02