Finding the Fourth Proportional to 12,397.86, 17,100.72 and 7,684.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,397.86 : 17,100.72 = 7,684.47 : x
2. Step 2: Convert to fraction form
   12,397.86/17,100.72 = 7,684.47/x
3. Step 3: Cross multiply
   12,397.86x = 17,100.72 × 7,684.47
4. Step 4: Simplify right side
   12,397.86x = 131,409,969.82
5. Step 5: Solve for x
   x = 131,409,969.82/12,397.86
6. Step 6: Final answer
   x = 10,599.41