Finding the Fourth Proportional to 8,764.53, 12,101.76 and 5,784.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.53 : 12,101.76 = 5,784.60 : x
2. Step 2: Convert to fraction form
   8,764.53/12,101.76 = 5,784.60/x
3. Step 3: Cross multiply
   8,764.53x = 12,101.76 × 5,784.60
4. Step 4: Simplify right side
   8,764.53x = 70,003,840.90
5. Step 5: Solve for x
   x = 70,003,840.90/8,764.53
6. Step 6: Final answer
   x = 7,987.18