Finding the Fourth Proportional to 20,189.32, 27,856.98 and 12,733

Step by Step Solution

1. Step 1: Write the proportion equation
   20,189.32 : 27,856.98 = 12,733 : x
2. Step 2: Convert to fraction form
   20,189.32/27,856.98 = 12,733/x
3. Step 3: Cross multiply
   20,189.32x = 27,856.98 × 12,733
4. Step 4: Simplify right side
   20,189.32x = 354,702,926.34
5. Step 5: Solve for x
   x = 354,702,926.34/20,189.32
6. Step 6: Final answer
   x = 17,568.84