Finding the Fourth Proportional to 22,178.34, 30,606.12 and 12,746.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178.34 : 30,606.12 = 12,746.88 : x
2. Step 2: Convert to fraction form
   22,178.34/30,606.12 = 12,746.88/x
3. Step 3: Cross multiply
   22,178.34x = 30,606.12 × 12,746.88
4. Step 4: Simplify right side
   22,178.34x = 390,132,538.91
5. Step 5: Solve for x
   x = 390,132,538.91/22,178.34
6. Step 6: Final answer
   x = 17,590.70