Finding the Fourth Proportional to 35,865.72, 53,798.85 and 12,492.09

Step by Step Solution

1. Step 1: Write the proportion equation
   35,865.72 : 53,798.85 = 12,492.09 : x
2. Step 2: Convert to fraction form
   35,865.72/53,798.85 = 12,492.09/x
3. Step 3: Cross multiply
   35,865.72x = 53,798.85 × 12,492.09
4. Step 4: Simplify right side
   35,865.72x = 672,060,076.10
5. Step 5: Solve for x
   x = 672,060,076.10/35,865.72
6. Step 6: Final answer
   x = 18,738.23