Finding the Fourth Proportional to 35,128.26, 52,664.71 and 12,929.52

Step by Step Solution

1. Step 1: Write the proportion equation
   35,128.26 : 52,664.71 = 12,929.52 : x
2. Step 2: Convert to fraction form
   35,128.26/52,664.71 = 12,929.52/x
3. Step 3: Cross multiply
   35,128.26x = 52,664.71 × 12,929.52
4. Step 4: Simplify right side
   35,128.26x = 680,929,574.29
5. Step 5: Solve for x
   x = 680,929,574.29/35,128.26
6. Step 6: Final answer
   x = 19,384.10