Finding the Fourth Proportional to 28,099.60, 42,136.72 and 14,949.16

Step by Step Solution

1. Step 1: Write the proportion equation
   28,099.60 : 42,136.72 = 14,949.16 : x
2. Step 2: Convert to fraction form
   28,099.60/42,136.72 = 14,949.16/x
3. Step 3: Cross multiply
   28,099.60x = 42,136.72 × 14,949.16
4. Step 4: Simplify right side
   28,099.60x = 629,908,569.16
5. Step 5: Solve for x
   x = 629,908,569.16/28,099.60
6. Step 6: Final answer
   x = 22,416.99