Finding the Fourth Proportional to 35,386.17, 53,088.17 and 13,200.27

Step by Step Solution

1. Step 1: Write the proportion equation
   35,386.17 : 53,088.17 = 13,200.27 : x
2. Step 2: Convert to fraction form
   35,386.17/53,088.17 = 13,200.27/x
3. Step 3: Cross multiply
   35,386.17x = 53,088.17 × 13,200.27
4. Step 4: Simplify right side
   35,386.17x = 700,778,111.80
5. Step 5: Solve for x
   x = 700,778,111.80/35,386.17
6. Step 6: Final answer
   x = 19,803.73