Finding the Fourth Proportional to 40,392.72, 60,555.06 and 19,320.84

Step by Step Solution

1. Step 1: Write the proportion equation
   40,392.72 : 60,555.06 = 19,320.84 : x
2. Step 2: Convert to fraction form
   40,392.72/60,555.06 = 19,320.84/x
3. Step 3: Cross multiply
   40,392.72x = 60,555.06 × 19,320.84
4. Step 4: Simplify right side
   40,392.72x = 1,169,974,625.45
5. Step 5: Solve for x
   x = 1,169,974,625.45/40,392.72
6. Step 6: Final answer
   x = 28,964.99