Finding the Fourth Proportional to 9,036.20, 12,471.27 and 5,207.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.20 : 12,471.27 = 5,207.10 : x
2. Step 2: Convert to fraction form
   9,036.20/12,471.27 = 5,207.10/x
3. Step 3: Cross multiply
   9,036.20x = 12,471.27 × 5,207.10
4. Step 4: Simplify right side
   9,036.20x = 64,939,150.02
5. Step 5: Solve for x
   x = 64,939,150.02/9,036.20
6. Step 6: Final answer
   x = 7,186.56