Finding the Fourth Proportional to 40,493.16, 60,737.58 and 12,789

Step by Step Solution

1. Step 1: Write the proportion equation
   40,493.16 : 60,737.58 = 12,789 : x
2. Step 2: Convert to fraction form
   40,493.16/60,737.58 = 12,789/x
3. Step 3: Cross multiply
   40,493.16x = 60,737.58 × 12,789
4. Step 4: Simplify right side
   40,493.16x = 776,772,910.62
5. Step 5: Solve for x
   x = 776,772,910.62/40,493.16
6. Step 6: Final answer
   x = 19,182.82