Finding the Fourth Proportional to 22,475.30, 31,015.31 and 12,403.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,475.30 : 31,015.31 = 12,403.56 : x
2. Step 2: Convert to fraction form
   22,475.30/31,015.31 = 12,403.56/x
3. Step 3: Cross multiply
   22,475.30x = 31,015.31 × 12,403.56
4. Step 4: Simplify right side
   22,475.30x = 384,700,051.10
5. Step 5: Solve for x
   x = 384,700,051.10/22,475.30
6. Step 6: Final answer
   x = 17,116.57