Finding the Fourth Proportional to 10,619.40, 14,656.58 and 6,145.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,619.40 : 14,656.58 = 6,145.89 : x
2. Step 2: Convert to fraction form
   10,619.40/14,656.58 = 6,145.89/x
3. Step 3: Cross multiply
   10,619.40x = 14,656.58 × 6,145.89
4. Step 4: Simplify right side
   10,619.40x = 90,077,728.46
5. Step 5: Solve for x
   x = 90,077,728.46/10,619.40
6. Step 6: Final answer
   x = 8,482.37