Finding the Fourth Proportional to 9,787.98, 13,507.72 and 5,754.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,787.98 : 13,507.72 = 5,754.07 : x
2. Step 2: Convert to fraction form
   9,787.98/13,507.72 = 5,754.07/x
3. Step 3: Cross multiply
   9,787.98x = 13,507.72 × 5,754.07
4. Step 4: Simplify right side
   9,787.98x = 77,724,303.88
5. Step 5: Solve for x
   x = 77,724,303.88/9,787.98
6. Step 6: Final answer
   x = 7,940.79