Finding the Fourth Proportional to 23,499.38, 32,429.40 and 12,888.74

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.38 : 32,429.40 = 12,888.74 : x
2. Step 2: Convert to fraction form
   23,499.38/32,429.40 = 12,888.74/x
3. Step 3: Cross multiply
   23,499.38x = 32,429.40 × 12,888.74
4. Step 4: Simplify right side
   23,499.38x = 417,974,104.96
5. Step 5: Solve for x
   x = 417,974,104.96/23,499.38
6. Step 6: Final answer
   x = 17,786.60