Finding the Fourth Proportional to 15,989.56, 22,045.98 and 13,147

Step by Step Solution

1. Step 1: Write the proportion equation
   15,989.56 : 22,045.98 = 13,147 : x
2. Step 2: Convert to fraction form
   15,989.56/22,045.98 = 13,147/x
3. Step 3: Cross multiply
   15,989.56x = 22,045.98 × 13,147
4. Step 4: Simplify right side
   15,989.56x = 289,838,499.06
5. Step 5: Solve for x
   x = 289,838,499.06/15,989.56
6. Step 6: Final answer
   x = 18,126.73