Finding the Fourth Proportional to 8,738.60, 12,060.23 and 5,380.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,738.60 : 12,060.23 = 5,380.74 : x
2. Step 2: Convert to fraction form
   8,738.60/12,060.23 = 5,380.74/x
3. Step 3: Cross multiply
   8,738.60x = 12,060.23 × 5,380.74
4. Step 4: Simplify right side
   8,738.60x = 64,892,935.07
5. Step 5: Solve for x
   x = 64,892,935.07/8,738.60
6. Step 6: Final answer
   x = 7,426.01