Finding the Fourth Proportional to 17,688.48, 24,409.50 and 10,420.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,688.48 : 24,409.50 = 10,420.56 : x
2. Step 2: Convert to fraction form
   17,688.48/24,409.50 = 10,420.56/x
3. Step 3: Cross multiply
   17,688.48x = 24,409.50 × 10,420.56
4. Step 4: Simplify right side
   17,688.48x = 254,360,659.32
5. Step 5: Solve for x
   x = 254,360,659.32/17,688.48
6. Step 6: Final answer
   x = 14,380.02