Finding the Fourth Proportional to 10,348.98, 14,287.41 and 7,921.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,348.98 : 14,287.41 = 7,921.77 : x
2. Step 2: Convert to fraction form
   10,348.98/14,287.41 = 7,921.77/x
3. Step 3: Cross multiply
   10,348.98x = 14,287.41 × 7,921.77
4. Step 4: Simplify right side
   10,348.98x = 113,181,575.92
5. Step 5: Solve for x
   x = 113,181,575.92/10,348.98
6. Step 6: Final answer
   x = 10,936.50