Finding the Fourth Proportional to 13,045.83, 19,571.59 and 4,280.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,045.83 : 19,571.59 = 4,280.42 : x
2. Step 2: Convert to fraction form
   13,045.83/19,571.59 = 4,280.42/x
3. Step 3: Cross multiply
   13,045.83x = 19,571.59 × 4,280.42
4. Step 4: Simplify right side
   13,045.83x = 83,774,554.94
5. Step 5: Solve for x
   x = 83,774,554.94/13,045.83
6. Step 6: Final answer
   x = 6,421.56