Finding the Fourth Proportional to 9,290.52, 12,820.08 and 5,513.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.52 : 12,820.08 = 5,513.04 : x
2. Step 2: Convert to fraction form
   9,290.52/12,820.08 = 5,513.04/x
3. Step 3: Cross multiply
   9,290.52x = 12,820.08 × 5,513.04
4. Step 4: Simplify right side
   9,290.52x = 70,677,613.84
5. Step 5: Solve for x
   x = 70,677,613.84/9,290.52
6. Step 6: Final answer
   x = 7,607.50