Finding the Fourth Proportional to 6,699.21, 10,071.59 and 5,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,699.21 : 10,071.59 = 5,475.50 : x
2. Step 2: Convert to fraction form
   6,699.21/10,071.59 = 5,475.50/x
3. Step 3: Cross multiply
   6,699.21x = 10,071.59 × 5,475.50
4. Step 4: Simplify right side
   6,699.21x = 55,146,981.88
5. Step 5: Solve for x
   x = 55,146,981.88/6,699.21
6. Step 6: Final answer
   x = 8,231.87