Finding the Fourth Proportional to 9,827.60, 14,733.11 and 3,988.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,827.60 : 14,733.11 = 3,988.31 : x
2. Step 2: Convert to fraction form
   9,827.60/14,733.11 = 3,988.31/x
3. Step 3: Cross multiply
   9,827.60x = 14,733.11 × 3,988.31
4. Step 4: Simplify right side
   9,827.60x = 58,760,116.34
5. Step 5: Solve for x
   x = 58,760,116.34/9,827.60
6. Step 6: Final answer
   x = 5,979.09