Finding the Fourth Proportional to 23,503.48, 32,434.50 and 13,431.81

Step by Step Solution

1. Step 1: Write the proportion equation
   23,503.48 : 32,434.50 = 13,431.81 : x
2. Step 2: Convert to fraction form
   23,503.48/32,434.50 = 13,431.81/x
3. Step 3: Cross multiply
   23,503.48x = 32,434.50 × 13,431.81
4. Step 4: Simplify right side
   23,503.48x = 435,654,041.45
5. Step 5: Solve for x
   x = 435,654,041.45/23,503.48
6. Step 6: Final answer
   x = 18,535.72