Finding the Fourth Proportional to 9,434.43, 13,019.86 and 5,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,434.43 : 13,019.86 = 5,185.88 : x
2. Step 2: Convert to fraction form
   9,434.43/13,019.86 = 5,185.88/x
3. Step 3: Cross multiply
   9,434.43x = 13,019.86 × 5,185.88
4. Step 4: Simplify right side
   9,434.43x = 67,519,431.58
5. Step 5: Solve for x
   x = 67,519,431.58/9,434.43
6. Step 6: Final answer
   x = 7,156.70