Finding the Fourth Proportional to 23,500.13, 32,429.16 and 13,428.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,500.13 : 32,429.16 = 13,428.18 : x
2. Step 2: Convert to fraction form
   23,500.13/32,429.16 = 13,428.18/x
3. Step 3: Cross multiply
   23,500.13x = 32,429.16 × 13,428.18
4. Step 4: Simplify right side
   23,500.13x = 435,464,597.73
5. Step 5: Solve for x
   x = 435,464,597.73/23,500.13
6. Step 6: Final answer
   x = 18,530.31