Finding the Fourth Proportional to 10,913.59, 15,066.47 and 7,347.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,913.59 : 15,066.47 = 7,347.30 : x
2. Step 2: Convert to fraction form
   10,913.59/15,066.47 = 7,347.30/x
3. Step 3: Cross multiply
   10,913.59x = 15,066.47 × 7,347.30
4. Step 4: Simplify right side
   10,913.59x = 110,697,875.03
5. Step 5: Solve for x
   x = 110,697,875.03/10,913.59
6. Step 6: Final answer
   x = 10,143.12