Finding the Fourth Proportional to 12,928,732.96, 17,843,266.56 and 7,423,830.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928,732.96 : 17,843,266.56 = 7,423,830.40 : x
2. Step 2: Convert to fraction form
   12,928,732.96/17,843,266.56 = 7,423,830.40/x
3. Step 3: Cross multiply
   12,928,732.96x = 17,843,266.56 × 7,423,830.40
4. Step 4: Simplify right side
   12,928,732.96x = 132,465,384,723,431.42
5. Step 5: Solve for x
   x = 132,465,384,723,431.42/12,928,732.96
6. Step 6: Final answer
   x = 10,245,813.35