Finding the Fourth Proportional to 35,160.71, 52,726.86 and 12,969.15

Step by Step Solution

1. Step 1: Write the proportion equation
   35,160.71 : 52,726.86 = 12,969.15 : x
2. Step 2: Convert to fraction form
   35,160.71/52,726.86 = 12,969.15/x
3. Step 3: Cross multiply
   35,160.71x = 52,726.86 × 12,969.15
4. Step 4: Simplify right side
   35,160.71x = 683,822,556.37
5. Step 5: Solve for x
   x = 683,822,556.37/35,160.71
6. Step 6: Final answer
   x = 19,448.49