Finding the Fourth Proportional to 23,788.16, 32,828.48 and 13,178.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,788.16 : 32,828.48 = 13,178.72 : x
2. Step 2: Convert to fraction form
   23,788.16/32,828.48 = 13,178.72/x
3. Step 3: Cross multiply
   23,788.16x = 32,828.48 × 13,178.72
4. Step 4: Simplify right side
   23,788.16x = 432,637,345.95
5. Step 5: Solve for x
   x = 432,637,345.95/23,788.16
6. Step 6: Final answer
   x = 18,187.09