Finding the Fourth Proportional to 12,402.03, 17,109.85 and 7,924.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.03 : 17,109.85 = 7,924.62 : x
2. Step 2: Convert to fraction form
   12,402.03/17,109.85 = 7,924.62/x
3. Step 3: Cross multiply
   12,402.03x = 17,109.85 × 7,924.62
4. Step 4: Simplify right side
   12,402.03x = 135,589,059.51
5. Step 5: Solve for x
   x = 135,589,059.51/12,402.03
6. Step 6: Final answer
   x = 10,932.81