Finding the Fourth Proportional to 11,796.31, 16,278.90 and 7,080.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,796.31 : 16,278.90 = 7,080.58 : x
2. Step 2: Convert to fraction form
   11,796.31/16,278.90 = 7,080.58/x
3. Step 3: Cross multiply
   11,796.31x = 16,278.90 × 7,080.58
4. Step 4: Simplify right side
   11,796.31x = 115,264,053.76
5. Step 5: Solve for x
   x = 115,264,053.76/11,796.31
6. Step 6: Final answer
   x = 9,771.20