Finding the Fourth Proportional to 22,840.72, 31,507.05 and 13,407.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,840.72 : 31,507.05 = 13,407.46 : x
2. Step 2: Convert to fraction form
   22,840.72/31,507.05 = 13,407.46/x
3. Step 3: Cross multiply
   22,840.72x = 31,507.05 × 13,407.46
4. Step 4: Simplify right side
   22,840.72x = 422,429,512.59
5. Step 5: Solve for x
   x = 422,429,512.59/22,840.72
6. Step 6: Final answer
   x = 18,494.58