Finding the Fourth Proportional to 13,012.22, 17,956.86 and 7,043.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.22 : 17,956.86 = 7,043.87 : x
2. Step 2: Convert to fraction form
   13,012.22/17,956.86 = 7,043.87/x
3. Step 3: Cross multiply
   13,012.22x = 17,956.86 × 7,043.87
4. Step 4: Simplify right side
   13,012.22x = 126,485,787.45
5. Step 5: Solve for x
   x = 126,485,787.45/13,012.22
6. Step 6: Final answer
   x = 9,720.54