Finding the Fourth Proportional to 13,865.59, 19,134.46 and 7,577.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,865.59 : 19,134.46 = 7,577.96 : x
2. Step 2: Convert to fraction form
   13,865.59/19,134.46 = 7,577.96/x
3. Step 3: Cross multiply
   13,865.59x = 19,134.46 × 7,577.96
4. Step 4: Simplify right side
   13,865.59x = 145,000,172.50
5. Step 5: Solve for x
   x = 145,000,172.50/13,865.59
6. Step 6: Final answer
   x = 10,457.56