Finding the Fourth Proportional to 12,698.34, 17,524.32 and 7,321.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698.34 : 17,524.32 = 7,321.59 : x
2. Step 2: Convert to fraction form
   12,698.34/17,524.32 = 7,321.59/x
3. Step 3: Cross multiply
   12,698.34x = 17,524.32 × 7,321.59
4. Step 4: Simplify right side
   12,698.34x = 128,305,858.61
5. Step 5: Solve for x
   x = 128,305,858.61/12,698.34
6. Step 6: Final answer
   x = 10,104.15