Finding the Fourth Proportional to 13,729.96, 18,947.32 and 7,442.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,729.96 : 18,947.32 = 7,442.34 : x
2. Step 2: Convert to fraction form
   13,729.96/18,947.32 = 7,442.34/x
3. Step 3: Cross multiply
   13,729.96x = 18,947.32 × 7,442.34
4. Step 4: Simplify right side
   13,729.96x = 141,012,397.53
5. Step 5: Solve for x
   x = 141,012,397.53/13,729.96
6. Step 6: Final answer
   x = 10,270.42