Finding the Fourth Proportional to 7,345.98, 10,129.32 and 5,222.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,345.98 : 10,129.32 = 5,222.16 : x
2. Step 2: Convert to fraction form
   7,345.98/10,129.32 = 5,222.16/x
3. Step 3: Cross multiply
   7,345.98x = 10,129.32 × 5,222.16
4. Step 4: Simplify right side
   7,345.98x = 52,896,929.73
5. Step 5: Solve for x
   x = 52,896,929.73/7,345.98
6. Step 6: Final answer
   x = 7,200.80