Finding the Fourth Proportional to 10,620.56, 14,655.88 and 5,904.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.56 : 14,655.88 = 5,904.80 : x
2. Step 2: Convert to fraction form
   10,620.56/14,655.88 = 5,904.80/x
3. Step 3: Cross multiply
   10,620.56x = 14,655.88 × 5,904.80
4. Step 4: Simplify right side
   10,620.56x = 86,540,040.22
5. Step 5: Solve for x
   x = 86,540,040.22/10,620.56
6. Step 6: Final answer
   x = 8,148.35