Finding the Fourth Proportional to 23,498.20, 32,428.46 and 12,888.22

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.20 : 32,428.46 = 12,888.22 : x
2. Step 2: Convert to fraction form
   23,498.20/32,428.46 = 12,888.22/x
3. Step 3: Cross multiply
   23,498.20x = 32,428.46 × 12,888.22
4. Step 4: Simplify right side
   23,498.20x = 417,945,126.74
5. Step 5: Solve for x
   x = 417,945,126.74/23,498.20
6. Step 6: Final answer
   x = 17,786.26