Finding the Fourth Proportional to 13,839.28, 19,097.88 and 7,551.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,839.28 : 19,097.88 = 7,551.76 : x
2. Step 2: Convert to fraction form
   13,839.28/19,097.88 = 7,551.76/x
3. Step 3: Cross multiply
   13,839.28x = 19,097.88 × 7,551.76
4. Step 4: Simplify right side
   13,839.28x = 144,222,606.27
5. Step 5: Solve for x
   x = 144,222,606.27/13,839.28
6. Step 6: Final answer
   x = 10,421.25