Finding the Fourth Proportional to 13,457.42, 20,186.51 and 3,596.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,457.42 : 20,186.51 = 3,596.71 : x
2. Step 2: Convert to fraction form
   13,457.42/20,186.51 = 3,596.71/x
3. Step 3: Cross multiply
   13,457.42x = 20,186.51 × 3,596.71
4. Step 4: Simplify right side
   13,457.42x = 72,605,022.38
5. Step 5: Solve for x
   x = 72,605,022.38/13,457.42
6. Step 6: Final answer
   x = 5,395.17