Finding the Fourth Proportional to 9,031.32, 13,547.34 and 2,790.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,031.32 : 13,547.34 = 2,790.78 : x
2. Step 2: Convert to fraction form
   9,031.32/13,547.34 = 2,790.78/x
3. Step 3: Cross multiply
   9,031.32x = 13,547.34 × 2,790.78
4. Step 4: Simplify right side
   9,031.32x = 37,807,645.53
5. Step 5: Solve for x
   x = 37,807,645.53/9,031.32
6. Step 6: Final answer
   x = 4,186.28