Finding the Fourth Proportional to 13,064.48, 18,031.20 and 7,762.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,064.48 : 18,031.20 = 7,762.16 : x
2. Step 2: Convert to fraction form
   13,064.48/18,031.20 = 7,762.16/x
3. Step 3: Cross multiply
   13,064.48x = 18,031.20 × 7,762.16
4. Step 4: Simplify right side
   13,064.48x = 139,961,059.39
5. Step 5: Solve for x
   x = 139,961,059.39/13,064.48
6. Step 6: Final answer
   x = 10,713.10