Finding the Fourth Proportional to 12,443.31, 18,662.94 and 5,047.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.31 : 18,662.94 = 5,047.47 : x
2. Step 2: Convert to fraction form
   12,443.31/18,662.94 = 5,047.47/x
3. Step 3: Cross multiply
   12,443.31x = 18,662.94 × 5,047.47
4. Step 4: Simplify right side
   12,443.31x = 94,200,629.76
5. Step 5: Solve for x
   x = 94,200,629.76/12,443.31
6. Step 6: Final answer
   x = 7,570.38