Finding the Fourth Proportional to 22,956.42, 31,670.82 and 13,260.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,956.42 : 31,670.82 = 13,260.72 : x
2. Step 2: Convert to fraction form
   22,956.42/31,670.82 = 13,260.72/x
3. Step 3: Cross multiply
   22,956.42x = 31,670.82 × 13,260.72
4. Step 4: Simplify right side
   22,956.42x = 419,977,876.19
5. Step 5: Solve for x
   x = 419,977,876.19/22,956.42
6. Step 6: Final answer
   x = 18,294.57