Finding the Fourth Proportional to 8,981.71, 12,394.75 and 5,003.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.71 : 12,394.75 = 5,003.78 : x
2. Step 2: Convert to fraction form
   8,981.71/12,394.75 = 5,003.78/x
3. Step 3: Cross multiply
   8,981.71x = 12,394.75 × 5,003.78
4. Step 4: Simplify right side
   8,981.71x = 62,020,522.98
5. Step 5: Solve for x
   x = 62,020,522.98/8,981.71
6. Step 6: Final answer
   x = 6,905.20