Finding the Fourth Proportional to 7,387.55, 10,194.40 and 4,200.39

Step by Step Solution

1. Step 1: Write the proportion equation
   7,387.55 : 10,194.40 = 4,200.39 : x
2. Step 2: Convert to fraction form
   7,387.55/10,194.40 = 4,200.39/x
3. Step 3: Cross multiply
   7,387.55x = 10,194.40 × 4,200.39
4. Step 4: Simplify right side
   7,387.55x = 42,820,483.54
5. Step 5: Solve for x
   x = 42,820,483.54/7,387.55
6. Step 6: Final answer
   x = 5,796.31