Finding the Fourth Proportional to 9,139.82, 12,612.98 and 4,948.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.82 : 12,612.98 = 4,948.06 : x
2. Step 2: Convert to fraction form
   9,139.82/12,612.98 = 4,948.06/x
3. Step 3: Cross multiply
   9,139.82x = 12,612.98 × 4,948.06
4. Step 4: Simplify right side
   9,139.82x = 62,409,781.82
5. Step 5: Solve for x
   x = 62,409,781.82/9,139.82
6. Step 6: Final answer
   x = 6,828.34