Finding the Fourth Proportional to 19,500.64, 29,259.60 and 7,185.76

Step by Step Solution

1. Step 1: Write the proportion equation
   19,500.64 : 29,259.60 = 7,185.76 : x
2. Step 2: Convert to fraction form
   19,500.64/29,259.60 = 7,185.76/x
3. Step 3: Cross multiply
   19,500.64x = 29,259.60 × 7,185.76
4. Step 4: Simplify right side
   19,500.64x = 210,252,463.30
5. Step 5: Solve for x
   x = 210,252,463.30/19,500.64
6. Step 6: Final answer
   x = 10,781.82