Finding the Fourth Proportional to 13,022.39, 17,970.89 and 7,054.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,022.39 : 17,970.89 = 7,054.05 : x
2. Step 2: Convert to fraction form
   13,022.39/17,970.89 = 7,054.05/x
3. Step 3: Cross multiply
   13,022.39x = 17,970.89 × 7,054.05
4. Step 4: Simplify right side
   13,022.39x = 126,767,521.33
5. Step 5: Solve for x
   x = 126,767,521.33/13,022.39
6. Step 6: Final answer
   x = 9,734.59