Finding the Fourth Proportional to 20,132.42, 30,186.82 and 13,476.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,132.42 : 30,186.82 = 13,476.50 : x
2. Step 2: Convert to fraction form
   20,132.42/30,186.82 = 13,476.50/x
3. Step 3: Cross multiply
   20,132.42x = 30,186.82 × 13,476.50
4. Step 4: Simplify right side
   20,132.42x = 406,812,679.73
5. Step 5: Solve for x
   x = 406,812,679.73/20,132.42
6. Step 6: Final answer
   x = 20,206.84