Finding the Fourth Proportional to 9,888.31, 14,830.92 and 3,314.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,888.31 : 14,830.92 = 3,314.55 : x
2. Step 2: Convert to fraction form
   9,888.31/14,830.92 = 3,314.55/x
3. Step 3: Cross multiply
   9,888.31x = 14,830.92 × 3,314.55
4. Step 4: Simplify right side
   9,888.31x = 49,157,825.89
5. Step 5: Solve for x
   x = 49,157,825.89/9,888.31
6. Step 6: Final answer
   x = 4,971.31