Finding the Fourth Proportional to 23,008.32, 31,752.61 and 12,939.93

Step by Step Solution

1. Step 1: Write the proportion equation
   23,008.32 : 31,752.61 = 12,939.93 : x
2. Step 2: Convert to fraction form
   23,008.32/31,752.61 = 12,939.93/x
3. Step 3: Cross multiply
   23,008.32x = 31,752.61 × 12,939.93
4. Step 4: Simplify right side
   23,008.32x = 410,876,518.37
5. Step 5: Solve for x
   x = 410,876,518.37/23,008.32
6. Step 6: Final answer
   x = 17,857.74