Finding the Fourth Proportional to 17,378.55, 23,980.27 and 12,340.94

Step by Step Solution

1. Step 1: Write the proportion equation
   17,378.55 : 23,980.27 = 12,340.94 : x
2. Step 2: Convert to fraction form
   17,378.55/23,980.27 = 12,340.94/x
3. Step 3: Cross multiply
   17,378.55x = 23,980.27 × 12,340.94
4. Step 4: Simplify right side
   17,378.55x = 295,939,080.53
5. Step 5: Solve for x
   x = 295,939,080.53/17,378.55
6. Step 6: Final answer
   x = 17,028.99