Finding the Fourth Proportional to 10,961.02, 16,428.84 and 5,105.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.02 : 16,428.84 = 5,105.26 : x
2. Step 2: Convert to fraction form
   10,961.02/16,428.84 = 5,105.26/x
3. Step 3: Cross multiply
   10,961.02x = 16,428.84 × 5,105.26
4. Step 4: Simplify right side
   10,961.02x = 83,873,499.70
5. Step 5: Solve for x
   x = 83,873,499.70/10,961.02
6. Step 6: Final answer
   x = 7,651.98