Finding the Fourth Proportional to 22,474.98, 31,015.80 and 12,403.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,474.98 : 31,015.80 = 12,403.89 : x
2. Step 2: Convert to fraction form
   22,474.98/31,015.80 = 12,403.89/x
3. Step 3: Cross multiply
   22,474.98x = 31,015.80 × 12,403.89
4. Step 4: Simplify right side
   22,474.98x = 384,716,571.46
5. Step 5: Solve for x
   x = 384,716,571.46/22,474.98
6. Step 6: Final answer
   x = 17,117.55