Finding the Fourth Proportional to 13,796.79, 19,039.61 and 7,828.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,796.79 : 19,039.61 = 7,828.45 : x
2. Step 2: Convert to fraction form
   13,796.79/19,039.61 = 7,828.45/x
3. Step 3: Cross multiply
   13,796.79x = 19,039.61 × 7,828.45
4. Step 4: Simplify right side
   13,796.79x = 149,050,606.88
5. Step 5: Solve for x
   x = 149,050,606.88/13,796.79
6. Step 6: Final answer
   x = 10,803.28