Finding the Fourth Proportional to 17,236.60, 23,788.69 and 10,520.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,236.60 : 23,788.69 = 10,520.78 : x
2. Step 2: Convert to fraction form
   17,236.60/23,788.69 = 10,520.78/x
3. Step 3: Cross multiply
   17,236.60x = 23,788.69 × 10,520.78
4. Step 4: Simplify right side
   17,236.60x = 250,275,428.73
5. Step 5: Solve for x
   x = 250,275,428.73/17,236.60
6. Step 6: Final answer
   x = 14,520.00