Finding the Fourth Proportional to 22,901.96, 31,605.86 and 12,830.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,901.96 : 31,605.86 = 12,830.42 : x
2. Step 2: Convert to fraction form
   22,901.96/31,605.86 = 12,830.42/x
3. Step 3: Cross multiply
   22,901.96x = 31,605.86 × 12,830.42
4. Step 4: Simplify right side
   22,901.96x = 405,516,458.26
5. Step 5: Solve for x
   x = 405,516,458.26/22,901.96
6. Step 6: Final answer
   x = 17,706.63