Finding the Fourth Proportional to 17,142.18, 23,656.52 and 10,428.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142.18 : 23,656.52 = 10,428.10 : x
2. Step 2: Convert to fraction form
   17,142.18/23,656.52 = 10,428.10/x
3. Step 3: Cross multiply
   17,142.18x = 23,656.52 × 10,428.10
4. Step 4: Simplify right side
   17,142.18x = 246,692,556.21
5. Step 5: Solve for x
   x = 246,692,556.21/17,142.18
6. Step 6: Final answer
   x = 14,390.97