Finding the Fourth Proportional to 12,564.96, 17,341.02 and 7,187.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,564.96 : 17,341.02 = 7,187.89 : x
2. Step 2: Convert to fraction form
   12,564.96/17,341.02 = 7,187.89/x
3. Step 3: Cross multiply
   12,564.96x = 17,341.02 × 7,187.89
4. Step 4: Simplify right side
   12,564.96x = 124,645,344.25
5. Step 5: Solve for x
   x = 124,645,344.25/12,564.96
6. Step 6: Final answer
   x = 9,920.07