Finding the Fourth Proportional to 9,030.72, 12,462.42 and 5,256.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,030.72 : 12,462.42 = 5,256.12 : x
2. Step 2: Convert to fraction form
   9,030.72/12,462.42 = 5,256.12/x
3. Step 3: Cross multiply
   9,030.72x = 12,462.42 × 5,256.12
4. Step 4: Simplify right side
   9,030.72x = 65,503,975.01
5. Step 5: Solve for x
   x = 65,503,975.01/9,030.72
6. Step 6: Final answer
   x = 7,253.46