Finding the Fourth Proportional to 42,884.56, 64,323.60 and 11,722.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,884.56 : 64,323.60 = 11,722.24 : x
2. Step 2: Convert to fraction form
   42,884.56/64,323.60 = 11,722.24/x
3. Step 3: Cross multiply
   42,884.56x = 64,323.60 × 11,722.24
4. Step 4: Simplify right side
   42,884.56x = 754,016,676.86
5. Step 5: Solve for x
   x = 754,016,676.86/42,884.56
6. Step 6: Final answer
   x = 17,582.47