Finding the Fourth Proportional to 14,904.96, 20,566.03 and 10,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,904.96 : 20,566.03 = 10,128.72 : x
2. Step 2: Convert to fraction form
   14,904.96/20,566.03 = 10,128.72/x
3. Step 3: Cross multiply
   14,904.96x = 20,566.03 × 10,128.72
4. Step 4: Simplify right side
   14,904.96x = 208,307,559.38
5. Step 5: Solve for x
   x = 208,307,559.38/14,904.96
6. Step 6: Final answer
   x = 13,975.72