Finding the Fourth Proportional to 9,290.34, 12,821.58 and 5,312.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.34 : 12,821.58 = 5,312.04 : x
2. Step 2: Convert to fraction form
   9,290.34/12,821.58 = 5,312.04/x
3. Step 3: Cross multiply
   9,290.34x = 12,821.58 × 5,312.04
4. Step 4: Simplify right side
   9,290.34x = 68,108,745.82
5. Step 5: Solve for x
   x = 68,108,745.82/9,290.34
6. Step 6: Final answer
   x = 7,331.14