Finding the Fourth Proportional to 10,620.57, 14,656.91 and 5,904.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.57 : 14,656.91 = 5,904.75 : x
2. Step 2: Convert to fraction form
   10,620.57/14,656.91 = 5,904.75/x
3. Step 3: Cross multiply
   10,620.57x = 14,656.91 × 5,904.75
4. Step 4: Simplify right side
   10,620.57x = 86,545,359.80
5. Step 5: Solve for x
   x = 86,545,359.80/10,620.57
6. Step 6: Final answer
   x = 8,148.84