Finding the Fourth Proportional to 12,928.32, 17,842.59 and 7,623

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928.32 : 17,842.59 = 7,623 : x
2. Step 2: Convert to fraction form
   12,928.32/17,842.59 = 7,623/x
3. Step 3: Cross multiply
   12,928.32x = 17,842.59 × 7,623
4. Step 4: Simplify right side
   12,928.32x = 136,014,063.57
5. Step 5: Solve for x
   x = 136,014,063.57/12,928.32
6. Step 6: Final answer
   x = 10,520.63