Finding the Fourth Proportional to 10,004.31, 13,806.05 and 5,527.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,004.31 : 13,806.05 = 5,527.85 : x
2. Step 2: Convert to fraction form
   10,004.31/13,806.05 = 5,527.85/x
3. Step 3: Cross multiply
   10,004.31x = 13,806.05 × 5,527.85
4. Step 4: Simplify right side
   10,004.31x = 76,317,676.82
5. Step 5: Solve for x
   x = 76,317,676.82/10,004.31
6. Step 6: Final answer
   x = 7,628.48