Finding the Fourth Proportional to 10,690.31, 16,026.82 and 4,455.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,690.31 : 16,026.82 = 4,455.02 : x
2. Step 2: Convert to fraction form
   10,690.31/16,026.82 = 4,455.02/x
3. Step 3: Cross multiply
   10,690.31x = 16,026.82 × 4,455.02
4. Step 4: Simplify right side
   10,690.31x = 71,399,832.57
5. Step 5: Solve for x
   x = 71,399,832.57/10,690.31
6. Step 6: Final answer
   x = 6,678.93