Finding the Fourth Proportional to 13,047.63, 18,005.72 and 7,458.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.63 : 18,005.72 = 7,458.63 : x
2. Step 2: Convert to fraction form
   13,047.63/18,005.72 = 7,458.63/x
3. Step 3: Cross multiply
   13,047.63x = 18,005.72 × 7,458.63
4. Step 4: Simplify right side
   13,047.63x = 134,298,003.36
5. Step 5: Solve for x
   x = 134,298,003.36/13,047.63
6. Step 6: Final answer
   x = 10,292.90