Finding the Fourth Proportional to 38,436.63, 57,656.48 and 12,141.38

Step by Step Solution

1. Step 1: Write the proportion equation
   38,436.63 : 57,656.48 = 12,141.38 : x
2. Step 2: Convert to fraction form
   38,436.63/57,656.48 = 12,141.38/x
3. Step 3: Cross multiply
   38,436.63x = 57,656.48 × 12,141.38
4. Step 4: Simplify right side
   38,436.63x = 700,028,884.15
5. Step 5: Solve for x
   x = 700,028,884.15/38,436.63
6. Step 6: Final answer
   x = 18,212.55