Finding the Fourth Proportional to 9,971.82, 14,959.52 and 4,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971.82 : 14,959.52 = 4,128.88 : x
2. Step 2: Convert to fraction form
   9,971.82/14,959.52 = 4,128.88/x
3. Step 3: Cross multiply
   9,971.82x = 14,959.52 × 4,128.88
4. Step 4: Simplify right side
   9,971.82x = 61,766,062.94
5. Step 5: Solve for x
   x = 61,766,062.94/9,971.82
6. Step 6: Final answer
   x = 6,194.06