Finding the Fourth Proportional to 22,637.34, 31,239.72 and 13,690.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,637.34 : 31,239.72 = 13,690.83 : x
2. Step 2: Convert to fraction form
   22,637.34/31,239.72 = 13,690.83/x
3. Step 3: Cross multiply
   22,637.34x = 31,239.72 × 13,690.83
4. Step 4: Simplify right side
   22,637.34x = 427,697,695.77
5. Step 5: Solve for x
   x = 427,697,695.77/22,637.34
6. Step 6: Final answer
   x = 18,893.46