Finding the Fourth Proportional to 35,499.94, 53,248.08 and 10,540.20

Step by Step Solution

1. Step 1: Write the proportion equation
   35,499.94 : 53,248.08 = 10,540.20 : x
2. Step 2: Convert to fraction form
   35,499.94/53,248.08 = 10,540.20/x
3. Step 3: Cross multiply
   35,499.94x = 53,248.08 × 10,540.20
4. Step 4: Simplify right side
   35,499.94x = 561,245,412.82
5. Step 5: Solve for x
   x = 561,245,412.82/35,499.94
6. Step 6: Final answer
   x = 15,809.76