Finding the Fourth Proportional to 9,981.49, 14,973.60 and 3,405.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.49 : 14,973.60 = 3,405.91 : x
2. Step 2: Convert to fraction form
   9,981.49/14,973.60 = 3,405.91/x
3. Step 3: Cross multiply
   9,981.49x = 14,973.60 × 3,405.91
4. Step 4: Simplify right side
   9,981.49x = 50,998,733.98
5. Step 5: Solve for x
   x = 50,998,733.98/9,981.49
6. Step 6: Final answer
   x = 5,109.33