Finding the Fourth Proportional to 28,103.60, 42,142.72 and 14,953.16

Step by Step Solution

1. Step 1: Write the proportion equation
   28,103.60 : 42,142.72 = 14,953.16 : x
2. Step 2: Convert to fraction form
   28,103.60/42,142.72 = 14,953.16/x
3. Step 3: Cross multiply
   28,103.60x = 42,142.72 × 14,953.16
4. Step 4: Simplify right side
   28,103.60x = 630,166,835.00
5. Step 5: Solve for x
   x = 630,166,835.00/28,103.60
6. Step 6: Final answer
   x = 22,422.99