Finding the Fourth Proportional to 9,935.78, 14,904.16 and 5,549.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,935.78 : 14,904.16 = 5,549.90 : x
2. Step 2: Convert to fraction form
   9,935.78/14,904.16 = 5,549.90/x
3. Step 3: Cross multiply
   9,935.78x = 14,904.16 × 5,549.90
4. Step 4: Simplify right side
   9,935.78x = 82,716,597.58
5. Step 5: Solve for x
   x = 82,716,597.58/9,935.78
6. Step 6: Final answer
   x = 8,325.12