Finding the Fourth Proportional to 10,891.82, 16,330.71 and 4,655.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.82 : 16,330.71 = 4,655.90 : x
2. Step 2: Convert to fraction form
   10,891.82/16,330.71 = 4,655.90/x
3. Step 3: Cross multiply
   10,891.82x = 16,330.71 × 4,655.90
4. Step 4: Simplify right side
   10,891.82x = 76,034,152.69
5. Step 5: Solve for x
   x = 76,034,152.69/10,891.82
6. Step 6: Final answer
   x = 6,980.85