Finding the Fourth Proportional to 12,409.86, 17,134.56 and 7,636.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,409.86 : 17,134.56 = 7,636.22 : x
2. Step 2: Convert to fraction form
   12,409.86/17,134.56 = 7,636.22/x
3. Step 3: Cross multiply
   12,409.86x = 17,134.56 × 7,636.22
4. Step 4: Simplify right side
   12,409.86x = 130,843,269.76
5. Step 5: Solve for x
   x = 130,843,269.76/12,409.86
6. Step 6: Final answer
   x = 10,543.49