Finding the Fourth Proportional to 13,776.84, 19,012.32 and 7,489.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,776.84 : 19,012.32 = 7,489.62 : x
2. Step 2: Convert to fraction form
   13,776.84/19,012.32 = 7,489.62/x
3. Step 3: Cross multiply
   13,776.84x = 19,012.32 × 7,489.62
4. Step 4: Simplify right side
   13,776.84x = 142,395,052.12
5. Step 5: Solve for x
   x = 142,395,052.12/13,776.84
6. Step 6: Final answer
   x = 10,335.83