Finding the Fourth Proportional to 9,870.76, 14,824.86 and 8,741.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.76 : 14,824.86 = 8,741.80 : x
2. Step 2: Convert to fraction form
   9,870.76/14,824.86 = 8,741.80/x
3. Step 3: Cross multiply
   9,870.76x = 14,824.86 × 8,741.80
4. Step 4: Simplify right side
   9,870.76x = 129,595,961.15
5. Step 5: Solve for x
   x = 129,595,961.15/9,870.76
6. Step 6: Final answer
   x = 13,129.28