Finding the Fourth Proportional to 12,312.06, 18,468.15 and 3,547.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,312.06 : 18,468.15 = 3,547.18 : x
2. Step 2: Convert to fraction form
   12,312.06/18,468.15 = 3,547.18/x
3. Step 3: Cross multiply
   12,312.06x = 18,468.15 × 3,547.18
4. Step 4: Simplify right side
   12,312.06x = 65,509,852.32
5. Step 5: Solve for x
   x = 65,509,852.32/12,312.06
6. Step 6: Final answer
   x = 5,320.79