Finding the Fourth Proportional to 42,588.56, 63,892.56 and 13,010.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,588.56 : 63,892.56 = 13,010.60 : x
2. Step 2: Convert to fraction form
   42,588.56/63,892.56 = 13,010.60/x
3. Step 3: Cross multiply
   42,588.56x = 63,892.56 × 13,010.60
4. Step 4: Simplify right side
   42,588.56x = 831,280,541.14
5. Step 5: Solve for x
   x = 831,280,541.14/42,588.56
6. Step 6: Final answer
   x = 19,518.87