Finding the Fourth Proportional to 7,212.10, 10,826.24 and 5,588.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,212.10 : 10,826.24 = 5,588.22 : x
2. Step 2: Convert to fraction form
   7,212.10/10,826.24 = 5,588.22/x
3. Step 3: Cross multiply
   7,212.10x = 10,826.24 × 5,588.22
4. Step 4: Simplify right side
   7,212.10x = 60,499,410.89
5. Step 5: Solve for x
   x = 60,499,410.89/7,212.10
6. Step 6: Final answer
   x = 8,388.60