Finding the Fourth Proportional to 42,553.35, 63,839.34 and 12,973.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,553.35 : 63,839.34 = 12,973.50 : x
2. Step 2: Convert to fraction form
   42,553.35/63,839.34 = 12,973.50/x
3. Step 3: Cross multiply
   42,553.35x = 63,839.34 × 12,973.50
4. Step 4: Simplify right side
   42,553.35x = 828,219,677.49
5. Step 5: Solve for x
   x = 828,219,677.49/42,553.35
6. Step 6: Final answer
   x = 19,463.09