Finding the Fourth Proportional to 12,651,018.12, 18,977,693.76 and 4,131,399.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,651,018.12 : 18,977,693.76 = 4,131,399.24 : x
2. Step 2: Convert to fraction form
   12,651,018.12/18,977,693.76 = 4,131,399.24/x
3. Step 3: Cross multiply
   12,651,018.12x = 18,977,693.76 × 4,131,399.24
4. Step 4: Simplify right side
   12,651,018.12x = 78,404,429,577,016.75
5. Step 5: Solve for x
   x = 78,404,429,577,016.75/12,651,018.12
6. Step 6: Final answer
   x = 6,197,479.83