Finding the Fourth Proportional to 39,971.21, 55,160.72 and 22,066.22

Step by Step Solution

1. Step 1: Write the proportion equation
   39,971.21 : 55,160.72 = 22,066.22 : x
2. Step 2: Convert to fraction form
   39,971.21/55,160.72 = 22,066.22/x
3. Step 3: Cross multiply
   39,971.21x = 55,160.72 × 22,066.22
4. Step 4: Simplify right side
   39,971.21x = 1,217,188,196.74
5. Step 5: Solve for x
   x = 1,217,188,196.74/39,971.21
6. Step 6: Final answer
   x = 30,451.63