Finding the Fourth Proportional to 13,788.84, 19,028.46 and 7,501.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,788.84 : 19,028.46 = 7,501.21 : x
2. Step 2: Convert to fraction form
   13,788.84/19,028.46 = 7,501.21/x
3. Step 3: Cross multiply
   13,788.84x = 19,028.46 × 7,501.21
4. Step 4: Simplify right side
   13,788.84x = 142,736,474.44
5. Step 5: Solve for x
   x = 142,736,474.44/13,788.84
6. Step 6: Final answer
   x = 10,351.59