Finding the Fourth Proportional to 22,304.62, 30,780.96 and 12,613.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,304.62 : 30,780.96 = 12,613.30 : x
2. Step 2: Convert to fraction form
   22,304.62/30,780.96 = 12,613.30/x
3. Step 3: Cross multiply
   22,304.62x = 30,780.96 × 12,613.30
4. Step 4: Simplify right side
   22,304.62x = 388,249,482.77
5. Step 5: Solve for x
   x = 388,249,482.77/22,304.62
6. Step 6: Final answer
   x = 17,406.68