Finding the Fourth Proportional to 42,960.69, 64,402.15 and 15,252.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,960.69 : 64,402.15 = 15,252.21 : x
2. Step 2: Convert to fraction form
   42,960.69/64,402.15 = 15,252.21/x
3. Step 3: Cross multiply
   42,960.69x = 64,402.15 × 15,252.21
4. Step 4: Simplify right side
   42,960.69x = 982,275,116.25
5. Step 5: Solve for x
   x = 982,275,116.25/42,960.69
6. Step 6: Final answer
   x = 22,864.51