Finding the Fourth Proportional to 13,108.94, 18,090.77 and 7,443.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,108.94 : 18,090.77 = 7,443.93 : x
2. Step 2: Convert to fraction form
   13,108.94/18,090.77 = 7,443.93/x
3. Step 3: Cross multiply
   13,108.94x = 18,090.77 × 7,443.93
4. Step 4: Simplify right side
   13,108.94x = 134,666,388.31
5. Step 5: Solve for x
   x = 134,666,388.31/13,108.94
6. Step 6: Final answer
   x = 10,272.87