Finding the Fourth Proportional to 8,736.80, 12,060.52 and 5,200.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,736.80 : 12,060.52 = 5,200.34 : x
2. Step 2: Convert to fraction form
   8,736.80/12,060.52 = 5,200.34/x
3. Step 3: Cross multiply
   8,736.80x = 12,060.52 × 5,200.34
4. Step 4: Simplify right side
   8,736.80x = 62,718,804.58
5. Step 5: Solve for x
   x = 62,718,804.58/8,736.80
6. Step 6: Final answer
   x = 7,178.69