Finding the Fourth Proportional to 30,141.27, 45,191.97 and 13,478.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,141.27 : 45,191.97 = 13,478.37 : x
2. Step 2: Convert to fraction form
   30,141.27/45,191.97 = 13,478.37/x
3. Step 3: Cross multiply
   30,141.27x = 45,191.97 × 13,478.37
4. Step 4: Simplify right side
   30,141.27x = 609,114,092.69
5. Step 5: Solve for x
   x = 609,114,092.69/30,141.27
6. Step 6: Final answer
   x = 20,208.64