Finding the Fourth Proportional to 13,030.22, 19,538.04 and 4,262.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,030.22 : 19,538.04 = 4,262.78 : x
2. Step 2: Convert to fraction form
   13,030.22/19,538.04 = 4,262.78/x
3. Step 3: Cross multiply
   13,030.22x = 19,538.04 × 4,262.78
4. Step 4: Simplify right side
   13,030.22x = 83,286,366.15
5. Step 5: Solve for x
   x = 83,286,366.15/13,030.22
6. Step 6: Final answer
   x = 6,391.79