Finding the Fourth Proportional to 19,914.31, 29,874.71 and 7,438.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,914.31 : 29,874.71 = 7,438.69 : x
2. Step 2: Convert to fraction form
   19,914.31/29,874.71 = 7,438.69/x
3. Step 3: Cross multiply
   19,914.31x = 29,874.71 × 7,438.69
4. Step 4: Simplify right side
   19,914.31x = 222,228,706.53
5. Step 5: Solve for x
   x = 222,228,706.53/19,914.31
6. Step 6: Final answer
   x = 11,159.25