Finding the Fourth Proportional to 8,981.78, 12,394.86 and 5,002.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.78 : 12,394.86 = 5,002.80 : x
2. Step 2: Convert to fraction form
   8,981.78/12,394.86 = 5,002.80/x
3. Step 3: Cross multiply
   8,981.78x = 12,394.86 × 5,002.80
4. Step 4: Simplify right side
   8,981.78x = 62,009,005.61
5. Step 5: Solve for x
   x = 62,009,005.61/8,981.78
6. Step 6: Final answer
   x = 6,903.87