Finding the Fourth Proportional to 5,385.34, 7,432.98 and 3,148.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,385.34 : 7,432.98 = 3,148.30 : x
2. Step 2: Convert to fraction form
   5,385.34/7,432.98 = 3,148.30/x
3. Step 3: Cross multiply
   5,385.34x = 7,432.98 × 3,148.30
4. Step 4: Simplify right side
   5,385.34x = 23,401,250.93
5. Step 5: Solve for x
   x = 23,401,250.93/5,385.34
6. Step 6: Final answer
   x = 4,345.36