Finding the Fourth Proportional to 5,127.49, 7,068.70 and 5,057.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,127.49 : 7,068.70 = 5,057.29 : x
2. Step 2: Convert to fraction form
   5,127.49/7,068.70 = 5,057.29/x
3. Step 3: Cross multiply
   5,127.49x = 7,068.70 × 5,057.29
4. Step 4: Simplify right side
   5,127.49x = 35,748,465.82
5. Step 5: Solve for x
   x = 35,748,465.82/5,127.49
6. Step 6: Final answer
   x = 6,971.92