Finding the Fourth Proportional to 8,756.90, 12,084.89 and 4,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,756.90 : 12,084.89 = 4,980.72 : x
2. Step 2: Convert to fraction form
   8,756.90/12,084.89 = 4,980.72/x
3. Step 3: Cross multiply
   8,756.90x = 12,084.89 × 4,980.72
4. Step 4: Simplify right side
   8,756.90x = 60,191,473.74
5. Step 5: Solve for x
   x = 60,191,473.74/8,756.90
6. Step 6: Final answer
   x = 6,873.61