Finding the Fourth Proportional to 9,364.43, 12,923.46 and 5,385.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,364.43 : 12,923.46 = 5,385.98 : x
2. Step 2: Convert to fraction form
   9,364.43/12,923.46 = 5,385.98/x
3. Step 3: Cross multiply
   9,364.43x = 12,923.46 × 5,385.98
4. Step 4: Simplify right side
   9,364.43x = 69,605,432.47
5. Step 5: Solve for x
   x = 69,605,432.47/9,364.43
6. Step 6: Final answer
   x = 7,432.96