Finding the Fourth Proportional to 5,392.56, 7,429.00 and 5,143.45

Step by Step Solution

1. Step 1: Write the proportion equation
   5,392.56 : 7,429.00 = 5,143.45 : x
2. Step 2: Convert to fraction form
   5,392.56/7,429.00 = 5,143.45/x
3. Step 3: Cross multiply
   5,392.56x = 7,429.00 × 5,143.45
4. Step 4: Simplify right side
   5,392.56x = 38,210,703.89
5. Step 5: Solve for x
   x = 38,210,703.89/5,392.56
6. Step 6: Final answer
   x = 7,085.82