Finding the Fourth Proportional to 20,758.98, 31,138.59 and 5,176.61

Step by Step Solution

1. Step 1: Write the proportion equation
   20,758.98 : 31,138.59 = 5,176.61 : x
2. Step 2: Convert to fraction form
   20,758.98/31,138.59 = 5,176.61/x
3. Step 3: Cross multiply
   20,758.98x = 31,138.59 × 5,176.61
4. Step 4: Simplify right side
   20,758.98x = 161,192,316.87
5. Step 5: Solve for x
   x = 161,192,316.87/20,758.98
6. Step 6: Final answer
   x = 7,764.94