Finding the Fourth Proportional to 23,499.42, 32,430.90 and 13,427.64

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.42 : 32,430.90 = 13,427.64 : x
2. Step 2: Convert to fraction form
   23,499.42/32,430.90 = 13,427.64/x
3. Step 3: Cross multiply
   23,499.42x = 32,430.90 × 13,427.64
4. Step 4: Simplify right side
   23,499.42x = 435,470,424.90
5. Step 5: Solve for x
   x = 435,470,424.90/23,499.42
6. Step 6: Final answer
   x = 18,531.12