Finding the Fourth Proportional to 16,788.17, 23,166.26 and 9,715.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,788.17 : 23,166.26 = 9,715.05 : x
2. Step 2: Convert to fraction form
   16,788.17/23,166.26 = 9,715.05/x
3. Step 3: Cross multiply
   16,788.17x = 23,166.26 × 9,715.05
4. Step 4: Simplify right side
   16,788.17x = 225,061,374.21
5. Step 5: Solve for x
   x = 225,061,374.21/16,788.17
6. Step 6: Final answer
   x = 13,405.95