Finding the Fourth Proportional to 13,013.68, 17,958.86 and 7,045.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,013.68 : 17,958.86 = 7,045.34 : x
2. Step 2: Convert to fraction form
   13,013.68/17,958.86 = 7,045.34/x
3. Step 3: Cross multiply
   13,013.68x = 17,958.86 × 7,045.34
4. Step 4: Simplify right side
   13,013.68x = 126,526,274.71
5. Step 5: Solve for x
   x = 126,526,274.71/13,013.68
6. Step 6: Final answer
   x = 9,722.56