Finding the Fourth Proportional to 9,175.63, 12,661.72 and 5,087.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.63 : 12,661.72 = 5,087.39 : x
2. Step 2: Convert to fraction form
   9,175.63/12,661.72 = 5,087.39/x
3. Step 3: Cross multiply
   9,175.63x = 12,661.72 × 5,087.39
4. Step 4: Simplify right side
   9,175.63x = 64,415,044.40
5. Step 5: Solve for x
   x = 64,415,044.40/9,175.63
6. Step 6: Final answer
   x = 7,020.24