Finding the Fourth Proportional to 8,739.79, 12,061.71 and 5,384.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.79 : 12,061.71 = 5,384.56 : x
2. Step 2: Convert to fraction form
   8,739.79/12,061.71 = 5,384.56/x
3. Step 3: Cross multiply
   8,739.79x = 12,061.71 × 5,384.56
4. Step 4: Simplify right side
   8,739.79x = 64,947,001.20
5. Step 5: Solve for x
   x = 64,947,001.20/8,739.79
6. Step 6: Final answer
   x = 7,431.19