Finding the Fourth Proportional to 13,045.74, 19,566.72 and 4,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,045.74 : 19,566.72 = 4,279.50 : x
2. Step 2: Convert to fraction form
   13,045.74/19,566.72 = 4,279.50/x
3. Step 3: Cross multiply
   13,045.74x = 19,566.72 × 4,279.50
4. Step 4: Simplify right side
   13,045.74x = 83,735,778.24
5. Step 5: Solve for x
   x = 83,735,778.24/13,045.74
6. Step 6: Final answer
   x = 6,418.63