Finding the Fourth Proportional to 13,010.58, 19,518.75 and 7,164.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,010.58 : 19,518.75 = 7,164.18 : x
2. Step 2: Convert to fraction form
   13,010.58/19,518.75 = 7,164.18/x
3. Step 3: Cross multiply
   13,010.58x = 19,518.75 × 7,164.18
4. Step 4: Simplify right side
   13,010.58x = 139,835,838.38
5. Step 5: Solve for x
   x = 139,835,838.38/13,010.58
6. Step 6: Final answer
   x = 10,747.86