Finding the Fourth Proportional to 9,858.89, 14,779.15 and 3,617.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858.89 : 14,779.15 = 3,617.30 : x
2. Step 2: Convert to fraction form
   9,858.89/14,779.15 = 3,617.30/x
3. Step 3: Cross multiply
   9,858.89x = 14,779.15 × 3,617.30
4. Step 4: Simplify right side
   9,858.89x = 53,460,619.30
5. Step 5: Solve for x
   x = 53,460,619.30/9,858.89
6. Step 6: Final answer
   x = 5,422.58