Finding the Fourth Proportional to 40,488.96, 60,752.34 and 18,309

Step by Step Solution

1. Step 1: Write the proportion equation
   40,488.96 : 60,752.34 = 18,309 : x
2. Step 2: Convert to fraction form
   40,488.96/60,752.34 = 18,309/x
3. Step 3: Cross multiply
   40,488.96x = 60,752.34 × 18,309
4. Step 4: Simplify right side
   40,488.96x = 1,112,314,593.06
5. Step 5: Solve for x
   x = 1,112,314,593.06/40,488.96
6. Step 6: Final answer
   x = 27,472.05