Finding the Fourth Proportional to 35,510.04, 53,263.33 and 13,321.69

Step by Step Solution

1. Step 1: Write the proportion equation
   35,510.04 : 53,263.33 = 13,321.69 : x
2. Step 2: Convert to fraction form
   35,510.04/53,263.33 = 13,321.69/x
3. Step 3: Cross multiply
   35,510.04x = 53,263.33 × 13,321.69
4. Step 4: Simplify right side
   35,510.04x = 709,557,304.31
5. Step 5: Solve for x
   x = 709,557,304.31/35,510.04
6. Step 6: Final answer
   x = 19,981.88