Finding the Fourth Proportional to 9,210.18, 12,709.39 and 5,673.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,210.18 : 12,709.39 = 5,673.45 : x
2. Step 2: Convert to fraction form
   9,210.18/12,709.39 = 5,673.45/x
3. Step 3: Cross multiply
   9,210.18x = 12,709.39 × 5,673.45
4. Step 4: Simplify right side
   9,210.18x = 72,106,132.81
5. Step 5: Solve for x
   x = 72,106,132.81/9,210.18
6. Step 6: Final answer
   x = 7,828.96