Finding the Fourth Proportional to 12,853, 17,735.34 and 7,188.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,853 : 17,735.34 = 7,188.04 : x
2. Step 2: Convert to fraction form
   12,853/17,735.34 = 7,188.04/x
3. Step 3: Cross multiply
   12,853x = 17,735.34 × 7,188.04
4. Step 4: Simplify right side
   12,853x = 127,482,333.33
5. Step 5: Solve for x
   x = 127,482,333.33/12,853
6. Step 6: Final answer
   x = 9,918.49