Finding the Fourth Proportional to 12,615.05, 17,408.55 and 7,310.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615.05 : 17,408.55 = 7,310.36 : x
2. Step 2: Convert to fraction form
   12,615.05/17,408.55 = 7,310.36/x
3. Step 3: Cross multiply
   12,615.05x = 17,408.55 × 7,310.36
4. Step 4: Simplify right side
   12,615.05x = 127,262,811.10
5. Step 5: Solve for x
   x = 127,262,811.10/12,615.05
6. Step 6: Final answer
   x = 10,088.17