Finding the Fourth Proportional to 38,796.78, 58,158.06 and 12,483

Step by Step Solution

1. Step 1: Write the proportion equation
   38,796.78 : 58,158.06 = 12,483 : x
2. Step 2: Convert to fraction form
   38,796.78/58,158.06 = 12,483/x
3. Step 3: Cross multiply
   38,796.78x = 58,158.06 × 12,483
4. Step 4: Simplify right side
   38,796.78x = 725,987,062.98
5. Step 5: Solve for x
   x = 725,987,062.98/38,796.78
6. Step 6: Final answer
   x = 18,712.56