Finding the Fourth Proportional to 9,886.69, 14,835.89 and 3,651.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886.69 : 14,835.89 = 3,651.05 : x
2. Step 2: Convert to fraction form
   9,886.69/14,835.89 = 3,651.05/x
3. Step 3: Cross multiply
   9,886.69x = 14,835.89 × 3,651.05
4. Step 4: Simplify right side
   9,886.69x = 54,166,576.18
5. Step 5: Solve for x
   x = 54,166,576.18/9,886.69
6. Step 6: Final answer
   x = 5,478.74