Finding the Fourth Proportional to 42,716.48, 64,074.72 and 15,008

Step by Step Solution

1. Step 1: Write the proportion equation
   42,716.48 : 64,074.72 = 15,008 : x
2. Step 2: Convert to fraction form
   42,716.48/64,074.72 = 15,008/x
3. Step 3: Cross multiply
   42,716.48x = 64,074.72 × 15,008
4. Step 4: Simplify right side
   42,716.48x = 961,633,397.76
5. Step 5: Solve for x
   x = 961,633,397.76/42,716.48
6. Step 6: Final answer
   x = 22,512.00