Finding the Fourth Proportional to 13,011.43, 17,955.77 and 7,043.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,011.43 : 17,955.77 = 7,043.15 : x
2. Step 2: Convert to fraction form
   13,011.43/17,955.77 = 7,043.15/x
3. Step 3: Cross multiply
   13,011.43x = 17,955.77 × 7,043.15
4. Step 4: Simplify right side
   13,011.43x = 126,465,056.48
5. Step 5: Solve for x
   x = 126,465,056.48/13,011.43
6. Step 6: Final answer
   x = 9,719.54