Finding the Fourth Proportional to 9,147.69, 12,624.10 and 5,169.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.69 : 12,624.10 = 5,169.07 : x
2. Step 2: Convert to fraction form
   9,147.69/12,624.10 = 5,169.07/x
3. Step 3: Cross multiply
   9,147.69x = 12,624.10 × 5,169.07
4. Step 4: Simplify right side
   9,147.69x = 65,254,817.51
5. Step 5: Solve for x
   x = 65,254,817.51/9,147.69
6. Step 6: Final answer
   x = 7,133.47