Finding the Fourth Proportional to 9,436.69, 14,159.90 and 5,274.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.69 : 14,159.90 = 5,274.10 : x
2. Step 2: Convert to fraction form
   9,436.69/14,159.90 = 5,274.10/x
3. Step 3: Cross multiply
   9,436.69x = 14,159.90 × 5,274.10
4. Step 4: Simplify right side
   9,436.69x = 74,680,728.59
5. Step 5: Solve for x
   x = 74,680,728.59/9,436.69
6. Step 6: Final answer
   x = 7,913.87