Finding the Fourth Proportional to 11,590.21, 17,377.89 and 7,636.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,590.21 : 17,377.89 = 7,636.87 : x
2. Step 2: Convert to fraction form
   11,590.21/17,377.89 = 7,636.87/x
3. Step 3: Cross multiply
   11,590.21x = 17,377.89 × 7,636.87
4. Step 4: Simplify right side
   11,590.21x = 132,712,686.80
5. Step 5: Solve for x
   x = 132,712,686.80/11,590.21
6. Step 6: Final answer
   x = 11,450.41