Finding the Fourth Proportional to 13,410.58, 18,507.72 and 7,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410.58 : 18,507.72 = 7,443.50 : x
2. Step 2: Convert to fraction form
   13,410.58/18,507.72 = 7,443.50/x
3. Step 3: Cross multiply
   13,410.58x = 18,507.72 × 7,443.50
4. Step 4: Simplify right side
   13,410.58x = 137,762,213.82
5. Step 5: Solve for x
   x = 137,762,213.82/13,410.58
6. Step 6: Final answer
   x = 10,272.65