Finding the Fourth Proportional to 13,070.15, 18,037.98 and 7,406.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,070.15 : 18,037.98 = 7,406.27 : x
2. Step 2: Convert to fraction form
   13,070.15/18,037.98 = 7,406.27/x
3. Step 3: Cross multiply
   13,070.15x = 18,037.98 × 7,406.27
4. Step 4: Simplify right side
   13,070.15x = 133,594,150.13
5. Step 5: Solve for x
   x = 133,594,150.13/13,070.15
6. Step 6: Final answer
   x = 10,221.32