Finding the Fourth Proportional to 22,387.88, 30,894.90 and 12,697.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,387.88 : 30,894.90 = 12,697.76 : x
2. Step 2: Convert to fraction form
   22,387.88/30,894.90 = 12,697.76/x
3. Step 3: Cross multiply
   22,387.88x = 30,894.90 × 12,697.76
4. Step 4: Simplify right side
   22,387.88x = 392,296,025.42
5. Step 5: Solve for x
   x = 392,296,025.42/22,387.88
6. Step 6: Final answer
   x = 17,522.70