Finding the Fourth Proportional to 42,365.12, 63,550.72 and 11,200

Step by Step Solution

1. Step 1: Write the proportion equation
   42,365.12 : 63,550.72 = 11,200 : x
2. Step 2: Convert to fraction form
   42,365.12/63,550.72 = 11,200/x
3. Step 3: Cross multiply
   42,365.12x = 63,550.72 × 11,200
4. Step 4: Simplify right side
   42,365.12x = 711,768,064
5. Step 5: Solve for x
   x = 711,768,064/42,365.12
6. Step 6: Final answer
   x = 16,800.80