Finding the Fourth Proportional to 12,761.34, 17,605.73 and 9,412.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761.34 : 17,605.73 = 9,412.10 : x
2. Step 2: Convert to fraction form
   12,761.34/17,605.73 = 9,412.10/x
3. Step 3: Cross multiply
   12,761.34x = 17,605.73 × 9,412.10
4. Step 4: Simplify right side
   12,761.34x = 165,706,756.24
5. Step 5: Solve for x
   x = 165,706,756.24/12,761.34
6. Step 6: Final answer
   x = 12,985.06