Finding the Fourth Proportional to 10,242.88, 15,363.76 and 5,047

Step by Step Solution

1. Step 1: Write the proportion equation
   10,242.88 : 15,363.76 = 5,047 : x
2. Step 2: Convert to fraction form
   10,242.88/15,363.76 = 5,047/x
3. Step 3: Cross multiply
   10,242.88x = 15,363.76 × 5,047
4. Step 4: Simplify right side
   10,242.88x = 77,540,896.72
5. Step 5: Solve for x
   x = 77,540,896.72/10,242.88
6. Step 6: Final answer
   x = 7,570.22