Finding the Fourth Proportional to 7,003.48, 10,506.28 and 2,385.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,003.48 : 10,506.28 = 2,385.40 : x
2. Step 2: Convert to fraction form
   7,003.48/10,506.28 = 2,385.40/x
3. Step 3: Cross multiply
   7,003.48x = 10,506.28 × 2,385.40
4. Step 4: Simplify right side
   7,003.48x = 25,061,680.31
5. Step 5: Solve for x
   x = 25,061,680.31/7,003.48
6. Step 6: Final answer
   x = 3,578.46