Finding the Fourth Proportional to 9,889.76, 14,840.47 and 3,654.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,889.76 : 14,840.47 = 3,654.18 : x
2. Step 2: Convert to fraction form
   9,889.76/14,840.47 = 3,654.18/x
3. Step 3: Cross multiply
   9,889.76x = 14,840.47 × 3,654.18
4. Step 4: Simplify right side
   9,889.76x = 54,229,739.53
5. Step 5: Solve for x
   x = 54,229,739.53/9,889.76
6. Step 6: Final answer
   x = 5,483.43