Finding the Fourth Proportional to 13,056.29, 18,017.69 and 7,087.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,056.29 : 18,017.69 = 7,087.96 : x
2. Step 2: Convert to fraction form
   13,056.29/18,017.69 = 7,087.96/x
3. Step 3: Cross multiply
   13,056.29x = 18,017.69 × 7,087.96
4. Step 4: Simplify right side
   13,056.29x = 127,708,666.01
5. Step 5: Solve for x
   x = 127,708,666.01/13,056.29
6. Step 6: Final answer
   x = 9,781.39