Finding the Fourth Proportional to 28,106.47, 42,147.35 and 14,955.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,106.47 : 42,147.35 = 14,955.72 : x
2. Step 2: Convert to fraction form
   28,106.47/42,147.35 = 14,955.72/x
3. Step 3: Cross multiply
   28,106.47x = 42,147.35 × 14,955.72
4. Step 4: Simplify right side
   28,106.47x = 630,343,872.72
5. Step 5: Solve for x
   x = 630,343,872.72/28,106.47
6. Step 6: Final answer
   x = 22,427.00