Finding the Fourth Proportional to 9,189.69, 13,767.17 and 5,430.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.69 : 13,767.17 = 5,430.25 : x
2. Step 2: Convert to fraction form
   9,189.69/13,767.17 = 5,430.25/x
3. Step 3: Cross multiply
   9,189.69x = 13,767.17 × 5,430.25
4. Step 4: Simplify right side
   9,189.69x = 74,759,164.95
5. Step 5: Solve for x
   x = 74,759,164.95/9,189.69
6. Step 6: Final answer
   x = 8,135.12