Finding the Fourth Proportional to 28,100.12, 42,150.18 and 7,322

Step by Step Solution

1. Step 1: Write the proportion equation
   28,100.12 : 42,150.18 = 7,322 : x
2. Step 2: Convert to fraction form
   28,100.12/42,150.18 = 7,322/x
3. Step 3: Cross multiply
   28,100.12x = 42,150.18 × 7,322
4. Step 4: Simplify right side
   28,100.12x = 308,623,617.96
5. Step 5: Solve for x
   x = 308,623,617.96/28,100.12
6. Step 6: Final answer
   x = 10,983