Finding the Fourth Proportional to 22,477.69, 30,994.91 and 15,312.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,477.69 : 30,994.91 = 15,312.25 : x
2. Step 2: Convert to fraction form
   22,477.69/30,994.91 = 15,312.25/x
3. Step 3: Cross multiply
   22,477.69x = 30,994.91 × 15,312.25
4. Step 4: Simplify right side
   22,477.69x = 474,601,734.09
5. Step 5: Solve for x
   x = 474,601,734.09/22,477.69
6. Step 6: Final answer
   x = 21,114.35