Finding the Fourth Proportional to 13,410.42, 18,507.01 and 7,442.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.42 : 18,507.01 = 7,442.14 : x
2. Step 2: Convert to fraction form
   13,410.42/18,507.01 = 7,442.14/x
3. Step 3: Cross multiply
   13,410.42x = 18,507.01 × 7,442.14
4. Step 4: Simplify right side
   13,410.42x = 137,731,666.87
5. Step 5: Solve for x
   x = 137,731,666.87/13,410.42
6. Step 6: Final answer
   x = 10,270.50