Finding the Fourth Proportional to 10,619.55, 14,656.86 and 6,142.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,619.55 : 14,656.86 = 6,142.59 : x
2. Step 2: Convert to fraction form
   10,619.55/14,656.86 = 6,142.59/x
3. Step 3: Cross multiply
   10,619.55x = 14,656.86 × 6,142.59
4. Step 4: Simplify right side
   10,619.55x = 90,031,081.67
5. Step 5: Solve for x
   x = 90,031,081.67/10,619.55
6. Step 6: Final answer
   x = 8,477.86