Finding the Fourth Proportional to 13,047.75, 18,005.90 and 7,458.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.75 : 18,005.90 = 7,458.87 : x
2. Step 2: Convert to fraction form
   13,047.75/18,005.90 = 7,458.87/x
3. Step 3: Cross multiply
   13,047.75x = 18,005.90 × 7,458.87
4. Step 4: Simplify right side
   13,047.75x = 134,303,667.33
5. Step 5: Solve for x
   x = 134,303,667.33/13,047.75
6. Step 6: Final answer
   x = 10,293.24