Finding the Fourth Proportional to 9,189.72, 12,681.90 and 5,463

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.72 : 12,681.90 = 5,463 : x
2. Step 2: Convert to fraction form
   9,189.72/12,681.90 = 5,463/x
3. Step 3: Cross multiply
   9,189.72x = 12,681.90 × 5,463
4. Step 4: Simplify right side
   9,189.72x = 69,281,219.70
5. Step 5: Solve for x
   x = 69,281,219.70/9,189.72
6. Step 6: Final answer
   x = 7,538.99