Finding the Fourth Proportional to 9,985.89, 14,980.59 and 3,410.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.89 : 14,980.59 = 3,410.53 : x
2. Step 2: Convert to fraction form
   9,985.89/14,980.59 = 3,410.53/x
3. Step 3: Cross multiply
   9,985.89x = 14,980.59 × 3,410.53
4. Step 4: Simplify right side
   9,985.89x = 51,091,751.61
5. Step 5: Solve for x
   x = 51,091,751.61/9,985.89
6. Step 6: Final answer
   x = 5,116.39