Finding the Fourth Proportional to 43,116.32, 64,681.34 and 13,527.15

Step by Step Solution

1. Step 1: Write the proportion equation
   43,116.32 : 64,681.34 = 13,527.15 : x
2. Step 2: Convert to fraction form
   43,116.32/64,681.34 = 13,527.15/x
3. Step 3: Cross multiply
   43,116.32x = 64,681.34 × 13,527.15
4. Step 4: Simplify right side
   43,116.32x = 874,954,120.75
5. Step 5: Solve for x
   x = 874,954,120.75/43,116.32
6. Step 6: Final answer
   x = 20,292.88