Finding the Fourth Proportional to 10,859.74, 14,985.72 and 6,078.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,859.74 : 14,985.72 = 6,078.88 : x
2. Step 2: Convert to fraction form
   10,859.74/14,985.72 = 6,078.88/x
3. Step 3: Cross multiply
   10,859.74x = 14,985.72 × 6,078.88
4. Step 4: Simplify right side
   10,859.74x = 91,096,393.59
5. Step 5: Solve for x
   x = 91,096,393.59/10,859.74
6. Step 6: Final answer
   x = 8,388.45