Finding the Fourth Proportional to 10,820.55, 16,184.52 and 9,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,820.55 : 16,184.52 = 9,030.72 : x
2. Step 2: Convert to fraction form
   10,820.55/16,184.52 = 9,030.72/x
3. Step 3: Cross multiply
   10,820.55x = 16,184.52 × 9,030.72
4. Step 4: Simplify right side
   10,820.55x = 146,157,868.45
5. Step 5: Solve for x
   x = 146,157,868.45/10,820.55
6. Step 6: Final answer
   x = 13,507.43