Finding the Fourth Proportional to 9,290.93, 12,820.63 and 5,513.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.93 : 12,820.63 = 5,513.45 : x
2. Step 2: Convert to fraction form
   9,290.93/12,820.63 = 5,513.45/x
3. Step 3: Cross multiply
   9,290.93x = 12,820.63 × 5,513.45
4. Step 4: Simplify right side
   9,290.93x = 70,685,902.47
5. Step 5: Solve for x
   x = 70,685,902.47/9,290.93
6. Step 6: Final answer
   x = 7,608.05