Finding the Fourth Proportional to 10,098.32, 13,936.09 and 5,621.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,098.32 : 13,936.09 = 5,621.79 : x
2. Step 2: Convert to fraction form
   10,098.32/13,936.09 = 5,621.79/x
3. Step 3: Cross multiply
   10,098.32x = 13,936.09 × 5,621.79
4. Step 4: Simplify right side
   10,098.32x = 78,345,771.40
5. Step 5: Solve for x
   x = 78,345,771.40/10,098.32
6. Step 6: Final answer
   x = 7,758.30