Finding the Fourth Proportional to 13,314.21, 19,976.18 and 7,766.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,314.21 : 19,976.18 = 7,766.52 : x
2. Step 2: Convert to fraction form
   13,314.21/19,976.18 = 7,766.52/x
3. Step 3: Cross multiply
   13,314.21x = 19,976.18 × 7,766.52
4. Step 4: Simplify right side
   13,314.21x = 155,145,362.66
5. Step 5: Solve for x
   x = 155,145,362.66/13,314.21
6. Step 6: Final answer
   x = 11,652.61