Finding the Fourth Proportional to 13,111.34, 19,659.72 and 4,341.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,111.34 : 19,659.72 = 4,341.47 : x
2. Step 2: Convert to fraction form
   13,111.34/19,659.72 = 4,341.47/x
3. Step 3: Cross multiply
   13,111.34x = 19,659.72 × 4,341.47
4. Step 4: Simplify right side
   13,111.34x = 85,352,084.59
5. Step 5: Solve for x
   x = 85,352,084.59/13,111.34
6. Step 6: Final answer
   x = 6,509.79