Finding the Fourth Proportional to 17,380.76, 23,987.78 and 10,665.14

Step by Step Solution

1. Step 1: Write the proportion equation
   17,380.76 : 23,987.78 = 10,665.14 : x
2. Step 2: Convert to fraction form
   17,380.76/23,987.78 = 10,665.14/x
3. Step 3: Cross multiply
   17,380.76x = 23,987.78 × 10,665.14
4. Step 4: Simplify right side
   17,380.76x = 255,833,031.99
5. Step 5: Solve for x
   x = 255,833,031.99/17,380.76
6. Step 6: Final answer
   x = 14,719.32