Finding the Fourth Proportional to 8,784.05, 12,124.01 and 5,382.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.05 : 12,124.01 = 5,382.07 : x
2. Step 2: Convert to fraction form
   8,784.05/12,124.01 = 5,382.07/x
3. Step 3: Cross multiply
   8,784.05x = 12,124.01 × 5,382.07
4. Step 4: Simplify right side
   8,784.05x = 65,252,276.39
5. Step 5: Solve for x
   x = 65,252,276.39/8,784.05
6. Step 6: Final answer
   x = 7,428.49