Finding the Fourth Proportional to 13,922.21, 19,212.71 and 7,548.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,922.21 : 19,212.71 = 7,548.78 : x
2. Step 2: Convert to fraction form
   13,922.21/19,212.71 = 7,548.78/x
3. Step 3: Cross multiply
   13,922.21x = 19,212.71 × 7,548.78
4. Step 4: Simplify right side
   13,922.21x = 145,032,555.30
5. Step 5: Solve for x
   x = 145,032,555.30/13,922.21
6. Step 6: Final answer
   x = 10,417.35