Finding the Fourth Proportional to 12,661,057.72, 18,991,610.34 and 3,076,444.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,661,057.72 : 18,991,610.34 = 3,076,444.36 : x
2. Step 2: Convert to fraction form
   12,661,057.72/18,991,610.34 = 3,076,444.36/x
3. Step 3: Cross multiply
   12,661,057.72x = 18,991,610.34 × 3,076,444.36
4. Step 4: Simplify right side
   12,661,057.72x = 58,426,632,517,810.68
5. Step 5: Solve for x
   x = 58,426,632,517,810.68/12,661,057.72
6. Step 6: Final answer
   x = 4,614,672.31