Finding the Fourth Proportional to 35,675.31, 53,513.43 and 13,499.13

Step by Step Solution

1. Step 1: Write the proportion equation
   35,675.31 : 53,513.43 = 13,499.13 : x
2. Step 2: Convert to fraction form
   35,675.31/53,513.43 = 13,499.13/x
3. Step 3: Cross multiply
   35,675.31x = 53,513.43 × 13,499.13
4. Step 4: Simplify right side
   35,675.31x = 722,384,748.32
5. Step 5: Solve for x
   x = 722,384,748.32/35,675.31
6. Step 6: Final answer
   x = 20,248.87