Finding the Fourth Proportional to 35,631.12, 53,459.04 and 13,450.88

Step by Step Solution

1. Step 1: Write the proportion equation
   35,631.12 : 53,459.04 = 13,450.88 : x
2. Step 2: Convert to fraction form
   35,631.12/53,459.04 = 13,450.88/x
3. Step 3: Cross multiply
   35,631.12x = 53,459.04 × 13,450.88
4. Step 4: Simplify right side
   35,631.12x = 719,071,131.96
5. Step 5: Solve for x
   x = 719,071,131.96/35,631.12
6. Step 6: Final answer
   x = 20,180.99