Finding the Fourth Proportional to 14,225.84, 19,631.61 and 7,938.21

Step by Step Solution

1. Step 1: Write the proportion equation
   14,225.84 : 19,631.61 = 7,938.21 : x
2. Step 2: Convert to fraction form
   14,225.84/19,631.61 = 7,938.21/x
3. Step 3: Cross multiply
   14,225.84x = 19,631.61 × 7,938.21
4. Step 4: Simplify right side
   14,225.84x = 155,839,842.82
5. Step 5: Solve for x
   x = 155,839,842.82/14,225.84
6. Step 6: Final answer
   x = 10,954.71