Finding the Fourth Proportional to 13,019.61, 17,967.06 and 7,051.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.61 : 17,967.06 = 7,051.28 : x
2. Step 2: Convert to fraction form
   13,019.61/17,967.06 = 7,051.28/x
3. Step 3: Cross multiply
   13,019.61x = 17,967.06 × 7,051.28
4. Step 4: Simplify right side
   13,019.61x = 126,690,775.46
5. Step 5: Solve for x
   x = 126,690,775.46/13,019.61
6. Step 6: Final answer
   x = 9,730.76