Finding the Fourth Proportional to 9,976.91, 13,767.91 and 5,500.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.91 : 13,767.91 = 5,500.58 : x
2. Step 2: Convert to fraction form
   9,976.91/13,767.91 = 5,500.58/x
3. Step 3: Cross multiply
   9,976.91x = 13,767.91 × 5,500.58
4. Step 4: Simplify right side
   9,976.91x = 75,731,407.80
5. Step 5: Solve for x
   x = 75,731,407.80/9,976.91
6. Step 6: Final answer
   x = 7,590.67