Finding the Fourth Proportional to 9,189.32, 12,681.36 and 4,997.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.32 : 12,681.36 = 4,997.57 : x
2. Step 2: Convert to fraction form
   9,189.32/12,681.36 = 4,997.57/x
3. Step 3: Cross multiply
   9,189.32x = 12,681.36 × 4,997.57
4. Step 4: Simplify right side
   9,189.32x = 63,375,920.89
5. Step 5: Solve for x
   x = 63,375,920.89/9,189.32
6. Step 6: Final answer
   x = 6,896.70