Finding the Fourth Proportional to 9,109.02, 12,570.35 and 5,130.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,109.02 : 12,570.35 = 5,130.06 : x
2. Step 2: Convert to fraction form
   9,109.02/12,570.35 = 5,130.06/x
3. Step 3: Cross multiply
   9,109.02x = 12,570.35 × 5,130.06
4. Step 4: Simplify right side
   9,109.02x = 64,486,624.07
5. Step 5: Solve for x
   x = 64,486,624.07/9,109.02
6. Step 6: Final answer
   x = 7,079.43