Finding the Fourth Proportional to 6,881.31, 10,311.21 and 5,023.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,881.31 : 10,311.21 = 5,023.89 : x
2. Step 2: Convert to fraction form
   6,881.31/10,311.21 = 5,023.89/x
3. Step 3: Cross multiply
   6,881.31x = 10,311.21 × 5,023.89
4. Step 4: Simplify right side
   6,881.31x = 51,802,384.81
5. Step 5: Solve for x
   x = 51,802,384.81/6,881.31
6. Step 6: Final answer
   x = 7,527.98