Finding the Fourth Proportional to 9,886.82, 14,831.01 and 3,312.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886.82 : 14,831.01 = 3,312.99 : x
2. Step 2: Convert to fraction form
   9,886.82/14,831.01 = 3,312.99/x
3. Step 3: Cross multiply
   9,886.82x = 14,831.01 × 3,312.99
4. Step 4: Simplify right side
   9,886.82x = 49,134,987.82
5. Step 5: Solve for x
   x = 49,134,987.82/9,886.82
6. Step 6: Final answer
   x = 4,969.75