Finding the Fourth Proportional to 13,934.78, 19,229.34 and 7,647.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,934.78 : 19,229.34 = 7,647.02 : x
2. Step 2: Convert to fraction form
   13,934.78/19,229.34 = 7,647.02/x
3. Step 3: Cross multiply
   13,934.78x = 19,229.34 × 7,647.02
4. Step 4: Simplify right side
   13,934.78x = 147,047,147.57
5. Step 5: Solve for x
   x = 147,047,147.57/13,934.78
6. Step 6: Final answer
   x = 10,552.53