Finding the Fourth Proportional to 17,289.10, 23,855.60 and 10,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,289.10 : 23,855.60 = 10,216.72 : x
2. Step 2: Convert to fraction form
   17,289.10/23,855.60 = 10,216.72/x
3. Step 3: Cross multiply
   17,289.10x = 23,855.60 × 10,216.72
4. Step 4: Simplify right side
   17,289.10x = 243,725,985.63
5. Step 5: Solve for x
   x = 243,725,985.63/17,289.10
6. Step 6: Final answer
   x = 14,097.09