Finding the Fourth Proportional to 22,476.10, 31,016.78 and 12,404.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,476.10 : 31,016.78 = 12,404.30 : x
2. Step 2: Convert to fraction form
   22,476.10/31,016.78 = 12,404.30/x
3. Step 3: Cross multiply
   22,476.10x = 31,016.78 × 12,404.30
4. Step 4: Simplify right side
   22,476.10x = 384,741,444.15
5. Step 5: Solve for x
   x = 384,741,444.15/22,476.10
6. Step 6: Final answer
   x = 17,117.80