Finding the Fourth Proportional to 42,982.71, 64,471 and 11,392.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42,982.71 : 64,471 = 11,392.06 : x
2. Step 2: Convert to fraction form
   42,982.71/64,471 = 11,392.06/x
3. Step 3: Cross multiply
   42,982.71x = 64,471 × 11,392.06
4. Step 4: Simplify right side
   42,982.71x = 734,457,500.26
5. Step 5: Solve for x
   x = 734,457,500.26/42,982.71
6. Step 6: Final answer
   x = 17,087.28