Finding the Fourth Proportional to 9,459.31, 13,053.72 and 5,210.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,459.31 : 13,053.72 = 5,210.28 : x
2. Step 2: Convert to fraction form
   9,459.31/13,053.72 = 5,210.28/x
3. Step 3: Cross multiply
   9,459.31x = 13,053.72 × 5,210.28
4. Step 4: Simplify right side
   9,459.31x = 68,013,536.24
5. Step 5: Solve for x
   x = 68,013,536.24/9,459.31
6. Step 6: Final answer
   x = 7,190.12