Finding the Fourth Proportional to 9,200.12, 12,699.06 and 5,423.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,200.12 : 12,699.06 = 5,423.08 : x
2. Step 2: Convert to fraction form
   9,200.12/12,699.06 = 5,423.08/x
3. Step 3: Cross multiply
   9,200.12x = 12,699.06 × 5,423.08
4. Step 4: Simplify right side
   9,200.12x = 68,868,018.30
5. Step 5: Solve for x
   x = 68,868,018.30/9,200.12
6. Step 6: Final answer
   x = 7,485.56