Finding the Fourth Proportional to 9,787.56, 14,664.04 and 5,173.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,787.56 : 14,664.04 = 5,173.80 : x
2. Step 2: Convert to fraction form
   9,787.56/14,664.04 = 5,173.80/x
3. Step 3: Cross multiply
   9,787.56x = 14,664.04 × 5,173.80
4. Step 4: Simplify right side
   9,787.56x = 75,868,810.15
5. Step 5: Solve for x
   x = 75,868,810.15/9,787.56
6. Step 6: Final answer
   x = 7,751.56