Finding the Fourth Proportional to 13,808.66, 19,056.74 and 8,146.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,808.66 : 19,056.74 = 8,146.72 : x
2. Step 2: Convert to fraction form
   13,808.66/19,056.74 = 8,146.72/x
3. Step 3: Cross multiply
   13,808.66x = 19,056.74 × 8,146.72
4. Step 4: Simplify right side
   13,808.66x = 155,249,924.89
5. Step 5: Solve for x
   x = 155,249,924.89/13,808.66
6. Step 6: Final answer
   x = 11,242.94