Finding the Fourth Proportional to 17,185.10, 23,715.68 and 11,213.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,185.10 : 23,715.68 = 11,213.31 : x
2. Step 2: Convert to fraction form
   17,185.10/23,715.68 = 11,213.31/x
3. Step 3: Cross multiply
   17,185.10x = 23,715.68 × 11,213.31
4. Step 4: Simplify right side
   17,185.10x = 265,931,215.63
5. Step 5: Solve for x
   x = 265,931,215.63/17,185.10
6. Step 6: Final answer
   x = 15,474.52