Finding the Fourth Proportional to 22,432.76, 30,956.82 and 13,002.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,432.76 : 30,956.82 = 13,002.20 : x
2. Step 2: Convert to fraction form
   22,432.76/30,956.82 = 13,002.20/x
3. Step 3: Cross multiply
   22,432.76x = 30,956.82 × 13,002.20
4. Step 4: Simplify right side
   22,432.76x = 402,506,765.00
5. Step 5: Solve for x
   x = 402,506,765.00/22,432.76
6. Step 6: Final answer
   x = 17,942.81