Finding the Fourth Proportional to 13,061.71, 19,590.51 and 4,296.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.71 : 19,590.51 = 4,296.55 : x
2. Step 2: Convert to fraction form
   13,061.71/19,590.51 = 4,296.55/x
3. Step 3: Cross multiply
   13,061.71x = 19,590.51 × 4,296.55
4. Step 4: Simplify right side
   13,061.71x = 84,171,605.74
5. Step 5: Solve for x
   x = 84,171,605.74/13,061.71
6. Step 6: Final answer
   x = 6,444.15