Finding the Fourth Proportional to 10,610.72, 15,905.12 and 4,769

Step by Step Solution

1. Step 1: Write the proportion equation
   10,610.72 : 15,905.12 = 4,769 : x
2. Step 2: Convert to fraction form
   10,610.72/15,905.12 = 4,769/x
3. Step 3: Cross multiply
   10,610.72x = 15,905.12 × 4,769
4. Step 4: Simplify right side
   10,610.72x = 75,851,517.28
5. Step 5: Solve for x
   x = 75,851,517.28/10,610.72
6. Step 6: Final answer
   x = 7,148.57