Finding the Fourth Proportional to 10,839.95, 16,267.31 and 4,996.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.95 : 16,267.31 = 4,996.61 : x
2. Step 2: Convert to fraction form
   10,839.95/16,267.31 = 4,996.61/x
3. Step 3: Cross multiply
   10,839.95x = 16,267.31 × 4,996.61
4. Step 4: Simplify right side
   10,839.95x = 81,281,403.82
5. Step 5: Solve for x
   x = 81,281,403.82/10,839.95
6. Step 6: Final answer
   x = 7,498.32