Finding the Fourth Proportional to 35,859.78, 53,758.89 and 12,483.18

Step by Step Solution

1. Step 1: Write the proportion equation
   35,859.78 : 53,758.89 = 12,483.18 : x
2. Step 2: Convert to fraction form
   35,859.78/53,758.89 = 12,483.18/x
3. Step 3: Cross multiply
   35,859.78x = 53,758.89 × 12,483.18
4. Step 4: Simplify right side
   35,859.78x = 671,081,900.47
5. Step 5: Solve for x
   x = 671,081,900.47/35,859.78
6. Step 6: Final answer
   x = 18,714.06