Finding the Fourth Proportional to 13,411.06, 18,507.27 and 7,442.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.06 : 18,507.27 = 7,442.72 : x
2. Step 2: Convert to fraction form
   13,411.06/18,507.27 = 7,442.72/x
3. Step 3: Cross multiply
   13,411.06x = 18,507.27 × 7,442.72
4. Step 4: Simplify right side
   13,411.06x = 137,744,495.59
5. Step 5: Solve for x
   x = 137,744,495.59/13,411.06
6. Step 6: Final answer
   x = 10,270.96