Finding the Fourth Proportional to 35,438.72, 53,145.60 and 10,472.12

Step by Step Solution

1. Step 1: Write the proportion equation
   35,438.72 : 53,145.60 = 10,472.12 : x
2. Step 2: Convert to fraction form
   35,438.72/53,145.60 = 10,472.12/x
3. Step 3: Cross multiply
   35,438.72x = 53,145.60 × 10,472.12
4. Step 4: Simplify right side
   35,438.72x = 556,547,100.67
5. Step 5: Solve for x
   x = 556,547,100.67/35,438.72
6. Step 6: Final answer
   x = 15,704.49