Finding the Fourth Proportional to 8,630.01, 12,947.24 and 3,947.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,630.01 : 12,947.24 = 3,947.78 : x
2. Step 2: Convert to fraction form
   8,630.01/12,947.24 = 3,947.78/x
3. Step 3: Cross multiply
   8,630.01x = 12,947.24 × 3,947.78
4. Step 4: Simplify right side
   8,630.01x = 51,112,897.36
5. Step 5: Solve for x
   x = 51,112,897.36/8,630.01
6. Step 6: Final answer
   x = 5,922.69