Finding the Fourth Proportional to 13,076.21, 19,607.94 and 4,639.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,076.21 : 19,607.94 = 4,639.86 : x
2. Step 2: Convert to fraction form
   13,076.21/19,607.94 = 4,639.86/x
3. Step 3: Cross multiply
   13,076.21x = 19,607.94 × 4,639.86
4. Step 4: Simplify right side
   13,076.21x = 90,978,096.49
5. Step 5: Solve for x
   x = 90,978,096.49/13,076.21
6. Step 6: Final answer
   x = 6,957.53