Finding the Fourth Proportional to 12,431,288.02, 18,645,160.56 and 3,911,403.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,431,288.02 : 18,645,160.56 = 3,911,403.10 : x
2. Step 2: Convert to fraction form
   12,431,288.02/18,645,160.56 = 3,911,403.10/x
3. Step 3: Cross multiply
   12,431,288.02x = 18,645,160.56 × 3,911,403.10
4. Step 4: Simplify right side
   12,431,288.02x = 72,928,738,814,381.73
5. Step 5: Solve for x
   x = 72,928,738,814,381.73/12,431,288.02
6. Step 6: Final answer
   x = 5,866,547.27