Finding the Fourth Proportional to 12,456,062.75, 18,681,939.63 and 5,631,048.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456,062.75 : 18,681,939.63 = 5,631,048.72 : x
2. Step 2: Convert to fraction form
   12,456,062.75/18,681,939.63 = 5,631,048.72/x
3. Step 3: Cross multiply
   12,456,062.75x = 18,681,939.63 × 5,631,048.72
4. Step 4: Simplify right side
   12,456,062.75x = 105,198,912,240,628.77
5. Step 5: Solve for x
   x = 105,198,912,240,628.77/12,456,062.75
6. Step 6: Final answer
   x = 8,445,599.09