Finding the Fourth Proportional to 13,730.04, 18,947.58 and 7,442.43

Step by Step Solution

1. Step 1: Write the proportion equation
   13,730.04 : 18,947.58 = 7,442.43 : x
2. Step 2: Convert to fraction form
   13,730.04/18,947.58 = 7,442.43/x
3. Step 3: Cross multiply
   13,730.04x = 18,947.58 × 7,442.43
4. Step 4: Simplify right side
   13,730.04x = 141,016,037.82
5. Step 5: Solve for x
   x = 141,016,037.82/13,730.04
6. Step 6: Final answer
   x = 10,270.62