Finding the Fourth Proportional to 28,936.32, 43,374.71 and 13,152.33

Step by Step Solution

1. Step 1: Write the proportion equation
   28,936.32 : 43,374.71 = 13,152.33 : x
2. Step 2: Convert to fraction form
   28,936.32/43,374.71 = 13,152.33/x
3. Step 3: Cross multiply
   28,936.32x = 43,374.71 × 13,152.33
4. Step 4: Simplify right side
   28,936.32x = 570,478,499.57
5. Step 5: Solve for x
   x = 570,478,499.57/28,936.32
6. Step 6: Final answer
   x = 19,714.96