Finding the Fourth Proportional to 22,432.42, 30,956.16 and 13,000.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,432.42 : 30,956.16 = 13,000.42 : x
2. Step 2: Convert to fraction form
   22,432.42/30,956.16 = 13,000.42/x
3. Step 3: Cross multiply
   22,432.42x = 30,956.16 × 13,000.42
4. Step 4: Simplify right side
   22,432.42x = 402,443,081.59
5. Step 5: Solve for x
   x = 402,443,081.59/22,432.42
6. Step 6: Final answer
   x = 17,940.24