Finding the Fourth Proportional to 5,384.52, 8,077.59 and 1,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,384.52 : 8,077.59 = 1,921.50 : x
2. Step 2: Convert to fraction form
   5,384.52/8,077.59 = 1,921.50/x
3. Step 3: Cross multiply
   5,384.52x = 8,077.59 × 1,921.50
4. Step 4: Simplify right side
   5,384.52x = 15,521,089.19
5. Step 5: Solve for x
   x = 15,521,089.19/5,384.52
6. Step 6: Final answer
   x = 2,882.54