Finding the Fourth Proportional to 22,656.96, 31,268.43 and 12,588.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,656.96 : 31,268.43 = 12,588.89 : x
2. Step 2: Convert to fraction form
   22,656.96/31,268.43 = 12,588.89/x
3. Step 3: Cross multiply
   22,656.96x = 31,268.43 × 12,588.89
4. Step 4: Simplify right side
   22,656.96x = 393,634,669.40
5. Step 5: Solve for x
   x = 393,634,669.40/22,656.96
6. Step 6: Final answer
   x = 17,373.68