Finding the Fourth Proportional to 28,150.42, 42,168.22 and 13,314.36

Step by Step Solution

1. Step 1: Write the proportion equation
   28,150.42 : 42,168.22 = 13,314.36 : x
2. Step 2: Convert to fraction form
   28,150.42/42,168.22 = 13,314.36/x
3. Step 3: Cross multiply
   28,150.42x = 42,168.22 × 13,314.36
4. Step 4: Simplify right side
   28,150.42x = 561,442,861.64
5. Step 5: Solve for x
   x = 561,442,861.64/28,150.42
6. Step 6: Final answer
   x = 19,944.39