Finding the Fourth Proportional to 8,412,369.28, 12,613,499.76 and 3,288,696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412,369.28 : 12,613,499.76 = 3,288,696.72 : x
2. Step 2: Convert to fraction form
   8,412,369.28/12,613,499.76 = 3,288,696.72/x
3. Step 3: Cross multiply
   8,412,369.28x = 12,613,499.76 × 3,288,696.72
4. Step 4: Simplify right side
   8,412,369.28x = 41,481,975,288,432.79
5. Step 5: Solve for x
   x = 41,481,975,288,432.79/8,412,369.28
6. Step 6: Final answer
   x = 4,931,069.23