Finding the Fourth Proportional to 14,123.76, 21,185.57 and 3,449.99

Step by Step Solution

1. Step 1: Write the proportion equation
   14,123.76 : 21,185.57 = 3,449.99 : x
2. Step 2: Convert to fraction form
   14,123.76/21,185.57 = 3,449.99/x
3. Step 3: Cross multiply
   14,123.76x = 21,185.57 × 3,449.99
4. Step 4: Simplify right side
   14,123.76x = 73,089,881.47
5. Step 5: Solve for x
   x = 73,089,881.47/14,123.76
6. Step 6: Final answer
   x = 5,174.96