Finding the Fourth Proportional to 12,478.23, 18,710.37 and 5,074.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,478.23 : 18,710.37 = 5,074.02 : x
2. Step 2: Convert to fraction form
   12,478.23/18,710.37 = 5,074.02/x
3. Step 3: Cross multiply
   12,478.23x = 18,710.37 × 5,074.02
4. Step 4: Simplify right side
   12,478.23x = 94,936,791.59
5. Step 5: Solve for x
   x = 94,936,791.59/12,478.23
6. Step 6: Final answer
   x = 7,608.19