Finding the Fourth Proportional to 13,146.31, 19,688.04 and 7,582.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146.31 : 19,688.04 = 7,582.79 : x
2. Step 2: Convert to fraction form
   13,146.31/19,688.04 = 7,582.79/x
3. Step 3: Cross multiply
   13,146.31x = 19,688.04 × 7,582.79
4. Step 4: Simplify right side
   13,146.31x = 149,290,272.83
5. Step 5: Solve for x
   x = 149,290,272.83/13,146.31
6. Step 6: Final answer
   x = 11,356.06