Finding the Fourth Proportional to 23,498.21, 32,428.47 and 12,888.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,498.21 : 32,428.47 = 12,888.23 : x
2. Step 2: Convert to fraction form
   23,498.21/32,428.47 = 12,888.23/x
3. Step 3: Cross multiply
   23,498.21x = 32,428.47 × 12,888.23
4. Step 4: Simplify right side
   23,498.21x = 417,945,579.91
5. Step 5: Solve for x
   x = 417,945,579.91/23,498.21
6. Step 6: Final answer
   x = 17,786.27