Finding the Fourth Proportional to 10,791.48, 14,889.54 and 8,276.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,791.48 : 14,889.54 = 8,276.20 : x
2. Step 2: Convert to fraction form
   10,791.48/14,889.54 = 8,276.20/x
3. Step 3: Cross multiply
   10,791.48x = 14,889.54 × 8,276.20
4. Step 4: Simplify right side
   10,791.48x = 123,228,810.95
5. Step 5: Solve for x
   x = 123,228,810.95/10,791.48
6. Step 6: Final answer
   x = 11,419.08