Finding the Fourth Proportional to 35,803.56, 53,703.72 and 12,431.82

Step by Step Solution

1. Step 1: Write the proportion equation
   35,803.56 : 53,703.72 = 12,431.82 : x
2. Step 2: Convert to fraction form
   35,803.56/53,703.72 = 12,431.82/x
3. Step 3: Cross multiply
   35,803.56x = 53,703.72 × 12,431.82
4. Step 4: Simplify right side
   35,803.56x = 667,634,980.37
5. Step 5: Solve for x
   x = 667,634,980.37/35,803.56
6. Step 6: Final answer
   x = 18,647.17