Finding the Fourth Proportional to 11,881.10, 16,395.28 and 7,101.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,881.10 : 16,395.28 = 7,101.15 : x
2. Step 2: Convert to fraction form
   11,881.10/16,395.28 = 7,101.15/x
3. Step 3: Cross multiply
   11,881.10x = 16,395.28 × 7,101.15
4. Step 4: Simplify right side
   11,881.10x = 116,425,324.82
5. Step 5: Solve for x
   x = 116,425,324.82/11,881.10
6. Step 6: Final answer
   x = 9,799.21