Finding the Fourth Proportional to 13,730.04, 18,947.50 and 7,442.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,730.04 : 18,947.50 = 7,442.42 : x
2. Step 2: Convert to fraction form
   13,730.04/18,947.50 = 7,442.42/x
3. Step 3: Cross multiply
   13,730.04x = 18,947.50 × 7,442.42
4. Step 4: Simplify right side
   13,730.04x = 141,015,252.95
5. Step 5: Solve for x
   x = 141,015,252.95/13,730.04
6. Step 6: Final answer
   x = 10,270.56