Finding the Fourth Proportional to 12,488,573.69, 18,735,534.50 and 3,735,539.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488,573.69 : 18,735,534.50 = 3,735,539.78 : x
2. Step 2: Convert to fraction form
   12,488,573.69/18,735,534.50 = 3,735,539.78/x
3. Step 3: Cross multiply
   12,488,573.69x = 18,735,534.50 × 3,735,539.78
4. Step 4: Simplify right side
   12,488,573.69x = 69,987,334,311,957.04
5. Step 5: Solve for x
   x = 69,987,334,311,957.04/12,488,573.69
6. Step 6: Final answer
   x = 5,604,109.49