Finding the Fourth Proportional to 13,460.67, 20,189.42 and 3,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,460.67 : 20,189.42 = 3,600.72 : x
2. Step 2: Convert to fraction form
   13,460.67/20,189.42 = 3,600.72/x
3. Step 3: Cross multiply
   13,460.67x = 20,189.42 × 3,600.72
4. Step 4: Simplify right side
   13,460.67x = 72,696,430.38
5. Step 5: Solve for x
   x = 72,696,430.38/13,460.67
6. Step 6: Final answer
   x = 5,400.65