Finding the Fourth Proportional to 9,364.59, 12,924.09 and 5,385.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,364.59 : 12,924.09 = 5,385.87 : x
2. Step 2: Convert to fraction form
   9,364.59/12,924.09 = 5,385.87/x
3. Step 3: Cross multiply
   9,364.59x = 12,924.09 × 5,385.87
4. Step 4: Simplify right side
   9,364.59x = 69,607,468.61
5. Step 5: Solve for x
   x = 69,607,468.61/9,364.59
6. Step 6: Final answer
   x = 7,433.05