Finding the Fourth Proportional to 22,659.37, 31,272.04 and 13,709.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.37 : 31,272.04 = 13,709.07 : x
2. Step 2: Convert to fraction form
   22,659.37/31,272.04 = 13,709.07/x
3. Step 3: Cross multiply
   22,659.37x = 31,272.04 × 13,709.07
4. Step 4: Simplify right side
   22,659.37x = 428,710,602.54
5. Step 5: Solve for x
   x = 428,710,602.54/22,659.37
6. Step 6: Final answer
   x = 18,919.80