Finding the Fourth Proportional to 12,057.71, 18,071.96 and 5,117.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,057.71 : 18,071.96 = 5,117.63 : x
2. Step 2: Convert to fraction form
   12,057.71/18,071.96 = 5,117.63/x
3. Step 3: Cross multiply
   12,057.71x = 18,071.96 × 5,117.63
4. Step 4: Simplify right side
   12,057.71x = 92,485,488.71
5. Step 5: Solve for x
   x = 92,485,488.71/12,057.71
6. Step 6: Final answer
   x = 7,670.24