Finding the Fourth Proportional to 12,948.57, 19,422.50 and 9,055.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,948.57 : 19,422.50 = 9,055.53 : x
2. Step 2: Convert to fraction form
   12,948.57/19,422.50 = 9,055.53/x
3. Step 3: Cross multiply
   12,948.57x = 19,422.50 × 9,055.53
4. Step 4: Simplify right side
   12,948.57x = 175,880,986.15
5. Step 5: Solve for x
   x = 175,880,986.15/12,948.57
6. Step 6: Final answer
   x = 13,583.04