Finding the Fourth Proportional to 10,060.64, 13,878.06 and 6,419.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,060.64 : 13,878.06 = 6,419.88 : x
2. Step 2: Convert to fraction form
   10,060.64/13,878.06 = 6,419.88/x
3. Step 3: Cross multiply
   10,060.64x = 13,878.06 × 6,419.88
4. Step 4: Simplify right side
   10,060.64x = 89,095,479.83
5. Step 5: Solve for x
   x = 89,095,479.83/10,060.64
6. Step 6: Final answer
   x = 8,855.85